You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michael Smith here.

ASSISTANT: Michael, how may I assist you today?

USER: I am planning to visit Charlotte, as there is a doctor appointment for me.

ASSISTANT: Ok, may I know your journey dates please?

USER: My journey dates are from 11/14 to 11/16.

ASSISTANT: Provide me your airport codes please.

USER: My airport codes are from LAX to CLT.

ASSISTANT: Ok, please wait for a moment. Michael, I have found a available ticket for you with Spirit airline of 1009 flight. Shall I proceed?

USER: Yes, book my ticket.

ASSISTANT: Your ticket has booked.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.