You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Owing for an emergency, I want to cancel my flight reservation. Can you please help me?

ASSISTANT: Sure, I am happy to help you out. May I know your name to check your reservation status?

USER: Thank you, my name is Dennis Anderson.

ASSISTANT: Ok, please give me a moment.

USER: Ok, sure.

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

USER: Ok, no problem. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.