You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Miller here.

ASSISTANT: How may I support you Mark?

USER: There is a music concert by shawn mendes in Forth Worth-DFW, so I want to book a ticket from Los Angeles-LAX.

ASSISTANT: Please let me know your journey dates.

USER: My departure date is on 11/09 and return on 11/11.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Yes, I found a flight for you in Delta airline with price 100.

USER: Please proceed for booking.

ASSISTANT: Your flight is booked with flight 1002.

USER: Thanks for your help.

ASSISTANT: Welcome.