You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Brian Johnson.

ASSISTANT: Nice to meet you Brian Johnson.

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 moment let me check your reservation. There is no reservation under your name.

USER: That's fine.

ASSISTANT: Thanks for consulting us.

USER: Thank  you for your service.