You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to cancel of my conference. Can you please help me?

ASSISTANT: Sure, can you provide me your name?

USER: I am Justin Williams.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Justin Williams. I regret to inform that there is no reservation by your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.