You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, before proceeding please provide me your name.

USER: Thank you. Myself Mary Lee.

ASSISTANT: Based on your name we haven't found any reservation to cancel.

USER: Ok, no problem. Thank you for checking out.

ASSISTANT: Thanks for reaching us.