You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I need you make few changes in my recent booking. Please help me.

ASSISTANT: Sure, I am here to help you with that. Can you please share your name?

USER: My name is Jerry Davis.

ASSISTANT: Please allow me a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no active reservation found on your name in our database.

USER: That's ok. Thank you.

ASSISTANT: Thank you for opting us, have a nice day.