You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Margaret Thompson.

ASSISTANT: Thanks for giving your name.

USER: I want to cancel my existing reservation. Please help me with it.

ASSISTANT: Sure, I will help you in that. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thanks for contacting us, have a great day.