You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Gary Adams, can you please help me in booking a flight ticket from AUS to DFW?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: My travelling dates are from 09/13 till 09/15.

ASSISTANT: Give me a moment. Sorry, there is no flights are found on your name.

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

ASSISTANT: Welcome. Have a nice day.