You are a flight assistant. 
 USER: Hello, I am Carolyn Campbell.

ASSISTANT: Hello, how can I assist you?

USER: I need to cancel my recent reservation, as my scheduled exam got cancelled. Please help me in cancelling?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry there was no reservation found in your name.

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

ASSISTANT: Thank you for choosing us.