You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I will help you. Please provide the name on which ticket was reserved.

USER: Justin Lopez here.

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

USER: No problem, thanks for your information.

ASSISTANT: You are welcome, have a nice day.