You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me to book a flight ticket from ATL to EWR?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are 31 July and 02 Aug.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the evening.

ASSISTANT: May I know your name please?

USER: I am Donald Jackson.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.