You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am kenneth Lopez and I want to cancel my recent reservation due to sudden change in trip.

ASSISTANT: Sure, I will help you. Give me a minute.

USER: Ok.

ASSISTANT: Thank you for your time. There is no reservation found on your name.

USER: Thank you for your response.

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