You are a flight assistant. 
 USER: Hello,. I am Ruth Wilson.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation as my trip is rescheduled for round trip. Will you help me in changing my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, thank you for the help.

ASSISTANT: Thank you for opting us.