You are a flight assistant. 
 USER: Hello, I am Jason Parker.

ASSISTANT: Hello. How can I aid you?

USER: I would like to travel from IAH to AUS. can you please help me to book a ticket?

ASSISTANT: Ok, may I know your travel dates?

USER: My travelling dates will be on 06/06 to 06/08.

ASSISTANT:  Ok, please wait.

USER: Ok.

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

USER: Not an issue, thank you.

ASSISTANT:  Thank you for opting us.