You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: I am James Thomas. I want to book a ticket from Oakland, OAK to Atlanta, ATL.

ASSISTANT: Ok.

USER: Can you book a ticket?

ASSISTANT: Sure, we are glad to aid you.

USER: Make sure that I need direct flight.

ASSISTANT: Help me with your dates of travel.

USER: I want to return on 01/28 and depart on 01/26.

ASSISTANT: Please, stay online I will check the availability of plane and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight found to your route.

USER: Okay, thank you.

ASSISTANT: Thank you for availing us.