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

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden demise of my grand mother, I want to cancel my reservation. Can you please help me?

ASSISTANT: Sure. Please, wait.

USER: Ok.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: It's ok, thank you for your response.

ASSISTANT: Thank you for approaching us.