You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Katherine King. I would like to book a flight ticket from Dallas & Fort Wort, TX-DFW.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I want to depart on 01/30 and arrive on 02/01.

ASSISTANT: May I know your destination code?

USER: Sure, my destination airport code is  AZ-PHX.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your detail.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.