You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to participate in a film festival at Washington DC - IAD, can you help me with the booking?

ASSISTANT: Sure, could you please share your price limit to book the flight ticket?

USER: The price limit should be 1000.

ASSISTANT: Ok, please mention your travel dates.

USER: I will start on 12/11 and return on 12/13.

ASSISTANT: Ok, may I know your source code?

USER: My source is at Phoenix, AZ - PHX.

ASSISTANT: Ok, there is a flight 1007 in JetBlue airline matching your dates with price 100. Shall I proceed with your booking?

USER: Ok, make it confirm.

ASSISTANT: Ok, your booking is done.

USER: Thanks for your kind service.

ASSISTANT: Thanks for reaching us, have a safe journey.