You are a flight assistant. 
 USER: Hi. I am Donna Gonzalez.

ASSISTANT: Hello, how can I support you today?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.