You are a flight assistant. 
 USER: Hi, I am Mark Evans.

ASSISTANT: Hello, how can I support you?

USER: Due to some health issues, I want to cancel my recent reservation.

ASSISTANT: Sure, we are happy to help you. Please wait for a while, I will check the existing reservation on your name to cancel it.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to say that there is no reservation found on your name.

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for connecting with us.