You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation, due to some health problems I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Sure, I am glad to help you. Could you please provide your name to check your reservation status?

USER: Thanks, my name is Elizabeth Perez.

ASSISTANT: Sorry to say, there is no reservation found on your name.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for your information.