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

ASSISTANT: Hello, how can I help you?

USER: As my holiday trip was postponed, Can you please cancel my reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: We are sorry to inform you that there is no reservation found in your name.

USER: Ok. Thank you.

ASSISTANT: Thanks for choosing us.