You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Jonathan Johnson. Due to heavy traffic, I am unable to catch my flight. So, can you please help me in ticket cancellation?

ASSISTANT: Sure, please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's fine, thank you.

ASSISTANT: Thanks for approaching us.