You are a flight assistant. 
 USER: Hello, I am Justin Williams.

ASSISTANT: Hello, how may I assist you?

USER:  I have a plan to visit San Francisco. Can you please book me a flight ticket to visit Twin Peaks?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel on 12/24, and need to catch return flight on 12/26.

ASSISTANT: Please share me your airport codes.

USER: Source is from Phoenix, PHX. Destination is to San Francisco, SFO.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1027. Shall I proceed for booking?

USER: May I know the connection and price limit?

ASSISTANT: It is a connection flight and price is 200.

USER: It is perfect, please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.