You are a flight assistant. 
 USER: Hello. David Brown here.

ASSISTANT: Hello, how may I assist you?

USER: Can you make my trip ticket from OAK to EWR?

ASSISTANT: Sure, may I know the travel dates please?

USER: My travel dates are from 08/15 to 08/17.

ASSISTANT: Ok, hold on for a moment please.

USER: Sure.

ASSISTANT: I found a flight for you with AA airline and it costs you 200. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked with 1028 flight number.

USER: Thank you.