You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, can I know your name/.

USER: I am Raymond Gonzalez.

ASSISTANT: How can I help you?

USER: My plan to attend a conference got cancelled so I want to cancel my reservation. Can you help me in cancelling?

ASSISTANT: Sure, give me a minute let me check with it.

USER: Ok.

ASSISTANT: Sorry ! I didn't found any reservation on your name.

USER: Its Ok. Thanks for your response.

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