You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Since my meeting got postpone, I want to cancel my existing reservation. Can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you. Please tell me your good name?

USER: I am Amy Brown.

ASSISTANT: Sorry to inform you Brown, there is no reservation with your name.

USER: It's ok, no issues.

ASSISTANT: Thank you for contacting us. Have a good day.