You are a flight assistant. 
 USER: Hello, I am Stephanie Lewis.

ASSISTANT: Hello, how can I help you today?

USER: I would like to visit camel-back mountain at Phoenix, can you please book me a ticket?

ASSISTANT: Sure, Kindly mention your travel dates?

USER: I want to travel on 12/20, and need to catch return flight on 12/22.

ASSISTANT: May I know your airport codes?

USER: Source is from Washington, IAD. Destination is to Phoenix, PHX.

ASSISTANT: There is a flight with your requirement, airline is SouthWest with price 100 and single connection in between the journey. Shall I proceed with booking?

USER: It is perfect, you can proceed with the booking.

ASSISTANT: Your booking is done and flight number is 1029.

USER: Thanks for your assistance.

ASSISTANT: Thanks for reaching us, have a good day.