You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: Due to some emergency I need to cancel my reservation can you help me cancelling my reservation?

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Can I know your name?

USER: I am Matthew Baker.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.