I'd like to travel with my 2 daugters( 2 &5) so do you have an assissant to help me during the flight?

you will have assistant with many airlines, the flight attendants are very helpful and friendly.i also found that many passengers also help, they are so bored and will do anything to pass the time.
i am also including a few points that came to mind with regards to helping you on the flight

i prefer to book myself on an overnight flight as apposed to a day flight.To avoid accentuating tiredness, try and fly at reasonable day time hours, so that their daily schedule isn鈥檛 disrupted too much. Though tests show that young children are least affected by jet lag in a comparison study to adults.
i have always booked my kids , kids meals, its no only more delicious for them, they also get it way before the normal meals, so i can help feed them and they dont wait long to eat.Bring plenty of snacks for children, in case they do not like the in-flight meals.
A window seat is great for kids because it provides a wall for them to doze against and also affords great views of take-off and landing. The earlier you book your tickets, the more choice you will have in making special seat requests. Requesting a bulkhead non-emergency-exit row, along the sides of the plane (with a window and an aisle seat), provides you and your toddler more floor space (if you don't mind your child unrestrained and playing on the floor). This worked really well for me on several flights.
In most cases, on international flights and sometimes domestic too, families with young children will be permitted to board first. But, it's never a sure thing. On that British Airways London to Delhi flight a few years back, not only couldn't we take our strollers to the plane's door, the gatekeepers didn't permit families to board early, citing there being too many children on the flight. Bah humbug.t won't be pretty, but consider yourself a pack mule when preparing for a long flight with young children. And remember, your needs don't matter (well, except when/if the kids nod off and the wine trolley rolls your way).Allow plenty of time to do everything, allocate sufficient time to navigate the airport with children.

Bring the obvious basics -- change of clothes, diapers, favorite blanket or stuffed toys, snacks in case they don't like what's being served and lots of wipes. I always like to give my boys snacks (granola bars, crackers etc) or a drink while the plane is taking off and landing to keep them swallowing and keep painful ear pressure at bay. Touch wood, after easily more than 25 flights with them so far, they've never suffered from pressure-related ear problems on planes.

Consider bringing a bottle of Benadryl, or the equivalent, if you don't mind "helping" baby sleep on those long flights. I used the stuff (just one regular dose at the beginning of the flight) until my boys were about two, and it seemed to work (though who knows, maybe they would have slept anyway). Just remember, for most children Benadryl makes them drowsy, but for a few, it makes them wired. Definitely experiment at home first.

New (and cheap) toys like books, matchbox cars and little plastic animals, keep kids entertained and excited to be opening a "present." Lots of stickers are also a good idea (they're not loud and can't hurt anyone!) Crayons and paper always entertain. And books, it's amazing how long my kids can sit still if read too.

Portable DVD players are another idea. Though so far I've self righteously held back from getting one of these (I'm sure my resolve will wear thin any minute now), many parents swear by these to keep kids 2+ happily zoned out on long flights. In lieu of bringing your own, more and more planes, including those of Singapore Airlines, British Airways and Quantas, for example, have personal video screens attached to each seat. Often there's a cartoon channel(s), which may or may not be appropriate for children under about age 10.

hope u have a good flight!!!