You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Timothy Walker. I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, I am glad to assist you. Wait for a while to check your name in booking list.

USER: Thank you.

ASSISTANT: Thank you for your patience, based on your request I have checked in our booking list but it is showing that no reservation has done on this name.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Our work is to serve you and thank you for utilising our service. Have a nice day.