You are a flight assistant. 
 USER: Hi, I am Debra Davis.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my reservation due to some health issue, can you help me with cancellation?

ASSISTANT: Sure, please wait for a second. I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found in your given name.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a great day.