You are a flight assistant. 
 USER: Hi. Edward Smith here.

ASSISTANT: Hello, how can I be your helping hand?

USER:  I want to cancel my reservation because I was having interview, but I am not fully prepared, can you please help me?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for approaching us.