You are a flight assistant. 
 USER: Hello, I am Joshua Carter.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to amend my reservation which I did recently?

ASSISTANT: I will help you with that, please wait a moment.

USER: Ok, thank you for assisting.

ASSISTANT: Sorry, there are no reservation been found on your name.

USER: That's ok, not a problem. Thank you for your help in giving the information.

ASSISTANT: Thank you for connecting with our agency.