You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: Can you help me cancel my reservation which was made on the name of Brian Nelson?

ASSISTANT: Just hold on a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting. We are sorry to notify, there is no reservation found in our data base.

USER: It's ok, thank you.

ASSISTANT: Thank you for connecting with us.