You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I need your help in making few changes in my recent booking. Please assist me.

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

USER: Thank you. My name is Jonathan King.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.