You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: My name is Matthew Perez.

ASSISTANT: Ok, please wait while I'll check your reservation status.

USER: Sure, I will wait.

ASSISTANT: Matthew Perez, there is no active reservation found your name to do modifications in that.

USER: That's ok. Thank you.

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