You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Edward Thompson, can you help me to book a flight on 02/20 and 02/22?

ASSISTANT: Sure, can I know the airport codes please?

USER: My source is LAS and my destination is LGA.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

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

USER: Yes, proceed with booking.

ASSISTANT: Your ticket has been booked with flight number 1022.

USER: Thank you.

ASSISTANT: You are welcome.