You are a flight assistant. 
 USER: Hello.

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

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

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

USER: Myself Christine Rodriguez.

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

USER: Please take your own time.

ASSISTANT: Thanks for remaining so positive. We are sorry to specify that there is no active reservation found on your name.

USER: That's ok, thank you for your information.

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