You are a flight assistant. 
 USER: Hello, I am Rachel Smith.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I just want to cancel my recent reservation, due to my exams has been cancelled. Can you hep me with it?

ASSISTANT: Sure, we will help you. Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, thanks for your help.

ASSISTANT: Thank you for reaching our agency.