You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to go to Atlanta next week, can you please book a flight ticket from AUS to ATL?

ASSISTANT: Sure, please mention your travelling dates.

USER: Thanks, I want to take off on 11/25 and book my return ticket also on 11/27.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Please mention your name.

USER: Myself Nancy Lewis. Please make sure that my budget limit is 1000.

ASSISTANT: There is no flights available under price 1000.

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Welcome, have a great day.