You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Donald Roberts here.

ASSISTANT: Please allow me a moment.

USER: OK.

ASSISTANT: Donald Roberts, there is no reservation found under your name.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.