You are a flight assistant. 
 USER: Hello, I'm Carolyn Campbell.

ASSISTANT: Hello.

USER: I would like to spend my free time with my family members in CLT, will you please help me to get flight ticket?

ASSISTANT: May I know your source code?

USER: My airport source code is IAH.

ASSISTANT: Ok, please share with us, when you are looking for your journey?

USER: My desired dates are 11/15  and 11/17.

ASSISTANT: Can you wait for a moment to check it in our data base?

USER: Ok.

ASSISTANT: I have found a flight-1009 of Spirit airlines, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT:  Your reservation process completed.

USER: Thank you.

ASSISTANT:  Thank you for using our service to fly.

USER: Welcome.