You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Dorothy Young.

ASSISTANT: How can I assist you today?

USER: Please help me in cancelling my recent reservation.

ASSISTANT: Sure, I'm glad to help you with that. Please let me check your reservation status.

USER: Sure.

ASSISTANT: Dorothy Young, there is no reservation found under your name to do cancellation.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.