You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Could you please help me in booking a flight ticket from PHX to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are Jan 20 and Jan 22.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Any other specifications to be met?

USER: No.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found an airline Delta with flight 1016 having a fare 300 with stopover. Shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: May I know your name?

USER: My name is Mark Roberts.

ASSISTANT: Your booking has been processed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.