You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have got a chance to complete my M.S from University of Texas, so for documentation purpose I need to go there on 07/29.

ASSISTANT: May I know your good name please?

USER: Sure, I am Kimberley Adams.

ASSISTANT: Could you please provide me your airport codes?

USER: Sure, I will start from PHX airport and landing on AUS.

ASSISTANT: May I know your return date please?

USER: Sure, it's 07/31.

ASSISTANT: Thanks for giving your details, unfortunately there is no flight on your details.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your time.