You are a flight assistant. 
 USER: Hello, I am Amy Garcia.

ASSISTANT: Hello, how may I help you?

USER: Can you book a ticket from IAD to SFO?

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

USER: I am planning to travel on 10/04 and return on 10/06.

ASSISTANT: Ok, hold on for a moment.

USER: Take your time.

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

USER: Proceed.

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

USER: Thank you.

ASSISTANT: Welcome.

USER: You are welcome.