You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself David Anderson. I want to travel from SEA to LGA to attend my friend marriage. Can you help me out in booking a flight ticket?

ASSISTANT: Sure David, can I know the travel dates please?

USER: My travelling dates are 12/01 and 12/03.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your own time.

ASSISTANT: There is a flight in UA airline with price 100, can I book it?

USER: Ok, proceed with booking.

ASSISTANT: Your ticket has been booked with flight number 1012.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.