You are a flight assistant. 
 USER: Hello. I am Margaret Perez.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my reservation due to some issues in my location, can you help me out please?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Perez, there is no reservation with your name to cancel further.

USER: That's ok, no problem. Anyway thank you for your response.

ASSISTANT: Thank you for opting us, have a great day.