You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you now?

USER: I need to change my recent reservation, can you help me?

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: I am Scott Nelson.

ASSISTANT: Ok, Please allow me a moment to check for the previous reservation in our database.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for checking.

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