You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you today?

USER: I am Patricia Smith. Due to some personal issue I want to change my recent reservation. Can you help me to change that reservation?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: That's fine. Thanks for your information.

ASSISTANT: Thank you for opting us.