You are a flight assistant. 
 USER: Hello, I am William Moore.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from PHX to AUS to meet my parents, can you please help me to book a flight with single connection?

ASSISTANT: Help me with your travel dates?

USER: My trip dates are 04/22 to 04/24.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: Ok, no issues. Thanks for your help.

ASSISTANT:  Thank you for opting us.