You are a flight assistant. 
 USER: Hello. I am Barbara Perez.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation, as my exam scheduled has been cancelled.

ASSISTANT: Ok.

USER: Please help me in cancelling?

ASSISTANT: Sure, I am here to help you. Please hold on for a moment, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for holding on, we do not found any reservation with your name.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thanks for approaching us, hope to serve you again.