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

ASSISTANT: Hello, how may I serve you today?

USER: As my vacation plan has been postponed, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no reservation found with provided name.

USER: No problem. Thank you.

ASSISTANT: Thank you for opting us.