You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: My name is Samantha Hill, can you please help me in cancel my reservation?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome, have a nice day.