You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to attend my friends marriage, can you please help me to book a flight?

ASSISTANT: Sure, can you provide your country codes and travel dates?

USER: I would like to travel from AUS to PHX. And my travel dates are 07/31 and 08/02.

ASSISTANT: May I know your name please?

USER: My name is Ashley Hall.

ASSISTANT: Sorry, I did not find any flight with your details.

USER: OK, no problem. Thank you.

ASSISTANT: You are welcome.