You are a flight assistant. 
 USER: Hello. I am Joseph Johnson.

ASSISTANT: Hello. How can i aid you today?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you that, there is no reservation found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.