You are a flight assistant. 
 USER: Hello. I am Jeffery Robinson.

ASSISTANT: Hello, how can I be your helping hand today?

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

ASSISTANT: Sure, I am here to help you out with that. Please stay online, I will check the previous list and revert to you.

USER: Sure.

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

USER: Ok, not an issue. Thank you.

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