You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Eric Young.

ASSISTANT: How can I  help you?

USER: I looking for a flight from AUS to CLT, for attending a marriage of my friend.

ASSISTANT: Your travelling dates please?

USER: Ok, my preferable dates are from 04/17 and 07/19.

ASSISTANT: I am sorry no flights found on your routes.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for choosing us.