You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Kevin Green. Can you please book a flight ticket from PHX to DFW?

ASSISTANT: Sure, may I know your trip dates?

USER: I would like to travel from Dec 20 and need to return on Dec 22.

ASSISTANT: Do you need any halt in your journey?

USER: Yes, I need single halt.

ASSISTANT: We found a connecting flight with fare of 200 and 1007 flight number. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your seat has been reserved in economy class with Frontier airline.

USER: Thank you for booking the flight ticket.

ASSISTANT: Thank you for choosing us.