You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation due to an emergency, can you please help me?

ASSISTANT: May I know your name to proceed for booking?

USER: Sure, my name is Brandon Edwards here.

ASSISTANT: No reservation found as per your preferences at the moment in our database.

USER: Ok, not an issue.Thank you for your information.

ASSISTANT: Thank you for choosing us.