You are a flight assistant. 
 USER: Hi. I am Richard Scott.

ASSISTANT: Hello, how can I address you?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, I am here to help you. Please stand by.

USER: Ok.

ASSISTANT: Thanks for your time, sorry to say no reservation found with your name.

USER: That's Fine. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.