You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

USER: Myself Robert Moore. I am looking to book a flight ticket with single connection, can you help me with that?

ASSISTANT: Sure, please share me your travel dates.

USER: I would like to start my journey on 11/13 and return on 11/15.

ASSISTANT: Can I know your airport codes?

USER: Sure, my airport codes are AUS and PHX.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.