You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Mary Wright this side, I am looking to book a flight from DCA to DFW, can you help me?

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

USER: Please look for the flights on 12/06 and 12/08.

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

USER: Ok, take your time.

ASSISTANT: I found a flight for you with Frontier airline and it costs you 300. Shall I proceed?

USER: Please book it.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us. Have a safe flight.