You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you aid me to cancel my reservation due to emergency?

ASSISTANT: Ok, I am here to help you with that. May I know your name?

USER: Thank you. Patrick Mitchell here.

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

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.