You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Moore.

ASSISTANT: How can I do some help for you at this time?

USER: I would like to change my reservation as I am moving for delegates meet, can you please help me out?

ASSISTANT: Sure, I am happy to help you, give me a moment to check it.

USER: Thank you.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name which you have provided. Thank you for reaching us, have a great day.

USER: Ok no problem, thanks for your search.

ASSISTANT: Welcome.