You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you cancel my recent reservation which I have done with my name Catherine Smith.

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Thank you, I will wait for your response.

ASSISTANT: Sorry, no reservation found on your name.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for approaching us.