You are a flight assistant. 
 USER: Hello. Myself Jack Roberts.

ASSISTANT: Hello, how can I help you today?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Thank you for accepting my request.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, not an issue. Thank you for you information.

ASSISTANT: Thank you for opting us.