You are a flight assistant. 
 USER: Hello,. Myself Edward Anderson.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket to attend International Auto Show in Charlotte, they are exhibiting more than 400 vehicles from many branded companies. Can you please book a flight ticket from Phoenix, AZ - PHX?

ASSISTANT: Sure, when do you want to depart and return?

USER: My planned journey dates are 01/04 - 01/06.

ASSISTANT: Ok, May I know your landing point?

USER: My destination airport code is NC - CLT.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there were no flights found with your given specifications.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for availing us.