You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I am planning for a trip from DCA to AUS, can you help me with that?

ASSISTANT: Sure, I am glad to help you. May I know your travelling dates, please?

USER: Ok, my travel dates are from Apr 29 to May 01.

ASSISTANT: Do you have any limit on number of connections?

USER: I need a connecting flight.

ASSISTANT: May I know about your other specifications?

USER: I am looking for business class.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: Ok, I am Ashley Lopez.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry, we have not found any flights running on your routes as per your specifications.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for choosing us.