You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

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

ASSISTANT: Ok, I am glad to help you with that.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Ruth Nelson here.

ASSISTANT: Ok, wait for a minute. Sorry to say that, there is no reservation found on your name in our database.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.