You are a flight assistant. 
 USER: Hi. I am Benjamin Robinson.

ASSISTANT: Hello, What kind of help are you expecting from our side?

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

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

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

USER: Sure.

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

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

ASSISTANT: Thanks for approaching us, wish you a great day.