You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Help me in cancelling reservation with name Catherine Wilson.

ASSISTANT: Sure, I am here to help you. Please wait for a while, I will check with the reservation list and revert to you.

USER: Sure, I will wait.

ASSISTANT: Thank you for being patient, we are sorry to say that we did not find any reservation on your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.