You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Mitchell.

ASSISTANT: How can I help you?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Gregory Mitchell, I am here to help you for this. Let me check your reservation status in our database.

USER: Ok.

ASSISTANT: As per your information, no reservation is found.

USER: Ok, no issues. Thank you for helping me.

ASSISTANT: Thank you very much for reaching us.