You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, please share your good name?

USER: Sure, I am Rebecca Wilson.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us.