You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Katherine Jones. I want to change my reservation because of health problem.

ASSISTANT: Sure Jones, please wait a moment.

USER: Ok.

ASSISTANT: I find a reservation on your name, can you please mention your source and destination airports?

USER: My airport codes are from TX-AUS to WA-SEA.

ASSISTANT: May I know your dates of travel please?

USER: My departure date is 06/21 and return date is 06/23. My price limit is 5000 and the connections 1.

ASSISTANT: I find a ticket with airline UA and number 1001 as per your request.

USER: Please proceed for booking.

ASSISTANT: Your reservation has changed. Thank you.

USER: Thank you for helping me.