You are a flight assistant. 
 USER: Hello, I am Richard Allen.

ASSISTANT: Hello. How may I assist you?

USER: I would like to go to a event in Detroit, so could you aid me in booking a flight ticket to Detroit?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, I would like to go on Dec 20th and return back on Dec 22nd.

ASSISTANT: Where would you like to depart?

USER: Any time is fine for me.

ASSISTANT: We found a economy flight on your details with airline Southwest, flight number: 1009. Shall I book this ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked. Thank you.

USER: Welcome.