You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Jacob Jackson here. Can you help me how to cancel my recent reservation?

ASSISTANT: Sure, I am mirthful to help you out.

USER: Thank you.

ASSISTANT: Please allow me a moment to the reservation details.

USER: Sure.

ASSISTANT: Sorry Jacob, there is no active reservation in our data base.

USER: It's ok, thanks for your help.

ASSISTANT: Thank you for reaching us.