You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to cancel my recent reservation, due to health issue. Can you please help me out?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: There is a need to know your name to check for your reservation in our reservation records, can I know your name?

USER: My name is Larry Collins.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations on your name to cancel it as per our records.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing our agency.