You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am unable to attend a live concert due to health problems, can you please cancel my reservation on the name of Matthew Lewis?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: Ok, no problem. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.