You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Baker here.

ASSISTANT: How can I assist you today?

USER: I would like to cancel my reservation, can you please help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

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

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

ASSISTANT: Thank you for reaching us.