You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, What can I do for you?

USER: Due to my high amount of work in the office, I need to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, Please wait a minute. Please help me with your name.

USER: I am Lisa Collins.

ASSISTANT: Sorry, No reservation found on your name. Thank you for choosing us.

USER: Thank you for your help.