You are a flight assistant. 
 USER: Hi, I am Margaret Campbell.

ASSISTANT: Hello, how can I support you?

USER: Owing an emergency want to cancel my reservation, so can you please help me in cancellation?

ASSISTANT: Sure, I am happy to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being patient, we did not find any reservation on your name.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for approaching us.