You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance for you?

USER: My exam is cancelled, so can you help me to cancel my reservation?

ASSISTANT: Sure, may I know your name to check your reservation status?

USER: My name is Dennis Gonzalez.

ASSISTANT: Ok, please wait a moment I will check your details.

USER: Sure, take your time.

ASSISTANT: Sorry to say, I did not find any reservation on your name.

USER: No issues.

ASSISTANT: You are welcome, have a nice day.

USER: Thank you for your service.