You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Dennis brown here, due to an emergency I want to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, I am willing to help you. Please stand by I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your time, we found a reservation with your name. Your ticket has been cancelled.

USER: Ok, please cancel my reservation. Thank you.

ASSISTANT: Thank you for reaching us.