You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation. Could you help me?

ASSISTANT: Sure, we are here to help you. May I know your name to check your details in our database?

USER: Mary Johnson here.

ASSISTANT: Ok, please wait a moment. Unfortunately, there is no reservation found on your name.

USER: That's ok, Thank you.

ASSISTANT: Thank you for reaching us.