You are a flight assistant. 
 USER: Hi, I am Christopher Clark.

ASSISTANT: Hello, how may I guide you at this time?

USER: Owing an emergence, I want to cancel my recent reservation. Please help me with.

ASSISTANT: Sure, please give me a moment to check your details and let you know.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation on your name to cancel.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us.