You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: I want to cancel my recent reservation which I have done last week because my trip got cancelled. Please help me out with that.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name, then It will be easy for me to check your reservation?

USER: My name is Charles Perez.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: It's very sad to inform you that, there is no active reservation found in your name.

USER: It's ok, no issue. Thank you for your help.

ASSISTANT: Thank you for availing us.