You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Charles Allen. Owing to an emergency, I want to cancel my reservation.

ASSISTANT: Ok, please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.