You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Kevin Thompson. Could you help me in booking a flight ticket from Phoenix to Charlotte on 05/11?

ASSISTANT: Sure, may I know your return date?

USER: I want to return on 05/13.

ASSISTANT: Kindly provide your journey codes.

USER: My source and destination airport codes are AZ - PHX, NC - CLT.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: There is a flight found with number 1012, Southwest as airline. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks for reaching us.