You are a flight assistant. 
 USER: Hello, I am Andrew Baker.

ASSISTANT: Hello, how may I assist you?

USER: I have to give a presentation at Boston. Can you help me to book a ticket for me?

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

USER: I am planning to start on 02/06 and return back on 02/08.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search for the flights from PHX to BOS.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: Make sure that price not exceeding 200.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 100. Shall I proceed?

USER: Yes.

ASSISTANT: Your ticket has been booked with 1016 flight number.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, thank you for choosing us.

USER: You are welcome.