You are a flight assistant. 
 USER: HI. I am Nancy Lewis.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I am here to help you. Please wait for a few minutes.

USER: Ok.

ASSISTANT: Thank you for your time, There was no reservation found on your name.

USER: No issue. Thank you for your help.

ASSISTANT: Thank you for choosing us.