You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, How can I assist you today?

USER: I am Steven Miller. I want to cancel my recent reservation due to postpone of my interview date. Can you help me with that?

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: No problem. Thank you for your kind service.

ASSISTANT: Thank you for reaching us. Have a good day.