You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicholas Martinez.

ASSISTANT: How may I aid you?

USER: Actually my plan to go for an adventure trip cancelled. I need your help to cancel my reservation aslo. Will you please help me?

ASSISTANT: Sure, I am here to help you please wait for a while to check your reservation whether existed or not.

USER: Ok.

ASSISTANT: Sorry to say, there is no reservation with your name to cancel it.

USER: It's Ok, thank you.

ASSISTANT: Thanks for choosing us.