You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Will you please book me a flight ticket on dates from Aug 19th to Aug 21st?

ASSISTANT: Sure, may I know your source and destination codes to reserve your seat.

USER: I will be leaving from IAD and arrive at PHX.

ASSISTANT: Do you need any connections between your trip?

USER: Yes, I need 1 stop over.

ASSISTANT: May I know your name?

USER: I am Kathleen Allen.

ASSISTANT: Any other requirements?

USER: My return time must be morning.

ASSISTANT: We have a connecting flight operated by JetBlue Airlines with a fare of 200. Shall I book your seat in this flight-1004?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked successfully.

USER: Thanks for your support.

ASSISTANT: Thank you for opting us.