You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Laura Perez.

ASSISTANT: How can I assist you today?

USER: I need some alteration in my reservation. Can you please help me?

ASSISTANT: Sure, I can help you in that. Please wait a moment while I'll check your previous reservation status.

USER: Sure, take your time.

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

USER: That's ok, thank you.

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