You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me to book a flight ticket from ATL to CLT?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: My trip dates are Apr 25 and Apr 27 respectively.

ASSISTANT: May I know your name?

USER: Ruth Lewis here.

ASSISTANT: Do you have any other specifications?

USER: I prefer for direct flight and economy class to travel.

ASSISTANT: Ok, wait for some time.

USER: My depart should be afternoon.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Thank you for the help.

ASSISTANT: Thanks for approaching us.