You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello.

USER: I am Joshua Jackson.

ASSISTANT: How may I assist you today?

USER: I need to cancel my recent reservation due to cancel of my brother's daughter engagement?

ASSISTANT: Please wait a moment, let me check.

USER: Ok.

ASSISTANT: Sorry Joshua, there are no active reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching our service.