You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua King.

ASSISTANT: How can I assist you at this moment?

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

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Joshua King, there are no active reservation found with your name in our database.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing our service.