You are a flight assistant. 
 USER: Hello, I am Samantha Lee.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to fly from San Francisco with my colleagues to visit Ferry building market place. Could you please assist me in booking a flight ticket to Phoenix?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination codes are CA-SFO and AZ-PHX.

ASSISTANT: Could you please share your journey dates?

USER: I want to depart on 05/07 and arrive on 05/09.

ASSISTANT: May I know your price limit?

USER: I can afford upto 200.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Spirit airline, flight number: 1001, price: 100 with one connection.

USER: Please reserve the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.