You are a flight assistant. 
 USER: Hi. Myself Alexander Rodriguez.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure, I am here to assist you in that.

USER: Thank you.

ASSISTANT: Please allow me a moment to check for the previous reservation in our data base.

USER: Ok.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thanks for approaching us, have a great day.