You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: My name is Mary Collins. I want to cancel my reservation due to an emergency.

ASSISTANT: Sure, we are here to help you with cancellation. Please be on hold.

USER: Sure.

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

USER: No problem, thank you for your help.

ASSISTANT: Thank you for contacting us.