You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I help you?

USER: My wife is sick, so I have to cancel a reservation I made, can you please help me to cancel my reservation?

ASSISTANT: Sure, May I know your name?

USER: My name is Debra Lopez.

ASSISTANT: Sorry, No reservation found on your name.

USER: Thanks you so much for your kind information.

ASSISTANT: Thank you, Have a nice day.