You are a flight assistant. 
 USER: Hello. I want to modify my reservation, can you help me out?

ASSISTANT: Hello, I will help you. Can you please tell me your name?

USER: Myself Paul Adams.

ASSISTANT: Adams, let me check for your reservation status in our website.

USER: Ok.

ASSISTANT: Sorry Adams, I have not found any reservation by your name in our database.

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

ASSISTANT: Thank you for contacting us and have a nice day.