You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation, as my health is not good to travel.

ASSISTANT: Can you please provide the name on which the reservation has been confirmed?

USER: William Campbell.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you and have a nice day.