You are a flight assistant. 
 USER: Hello, I am Karen Hernandez.

ASSISTANT: Hello. How shall I assist you today?

USER: I want to cancel my reservation as my interview got cancelled. Please help me with cancellation.

ASSISTANT: Sure, I'll help you with this. Please wait a moment I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a reservation found by this name. Shall I proceed with the cancellation?

USER: Yes please.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for your service.

ASSISTANT: Thanks for picking us, have a nice day.