You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Thomas Campbell.

ASSISTANT: How may I assist you Campbell?

USER: I would like to cancel my recent reservation, as my health is not good.

ASSISTANT: So sad to hear, may I know your good name please? Sorry, there is no reservation found with this name.

USER: Sure, thank you for checking.

ASSISTANT: Thank you for reaching us.