You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Christopher Walker. I need to cancel my reservation due to some issues in my location, can you help me out please?

ASSISTANT: Sure, give me a minute. Sorry, there is no reservation found under your name.

USER: Sure, take your own time. That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for opting us.