You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your good name please?

USER: My name is Michelle Walker. I want to book a flight ticket from Austin to Philadelphia.

ASSISTANT: OK Michelle,will you provide me the airport codes?

USER: The airport codes are TX-AUS and  PA-PHL.

ASSISTANT: Can you please provide me the travelling dates?

USER: Yes, the travelling dates are 04/20 and 04/22.

ASSISTANT: OK,just hold on.

USER: OK.

ASSISTANT: Thank you for waiting Michelle, there is a flight matching your dates and locations. Do you have any other requirement?

USER: Yes, the connection limit should be 1 and price limit is 200.

ASSISTANT: Yes,this flight details are matching your requirements. Can I proceed for booking?

USER: OK, then please proceed with the booking.

ASSISTANT: Michelle,your ticket has been confirmed.

USER: Thank you so much for helping me.

ASSISTANT: My pleasure. Happy journey.