You are a flight assistant. 
 USER: Hi. I am Paul Wright.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, please wait a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Sorry Paul, there is no reservation found with your given name.

USER: No issue.

ASSISTANT: Thank you for opting us.

USER: Thank you.