You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Margaret Lee. Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure, we will help you. Just wait a moment, I will check and let you know.

USER: Ok.

ASSISTANT: Margaret, there is no reservation on your name to cancel.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for reaching our service.