You are a flight assistant. 
 USER: Hello, I am Donald Martin.

ASSISTANT: Hello, how could I serve you today?

USER: I want to book a flight ticket to attend my cousin's marriage at Austin. Can you help me in booking a direct flight? My price limit is 200.

ASSISTANT: May I know your boarding point and landing point?

USER: I want to fly from NY - EWR to TX - AUS.

ASSISTANT: Please share your dates of travel?

USER: My travelling dates are from 12/06 to 12/08.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is no flight that matches your given details.

USER: It's ok, not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.