You are a flight assistant. 
 USER: Hello. I am Dorothy Baker.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me booking a flight ticket from ATL to PHL?

ASSISTANT: Sure, can you please share your travelling dates?

USER: I will start on 12/13 and return on 12/15.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a direct flight.

ASSISTANT: Please share your airline preference.

USER: I am looking for normal cost.

ASSISTANT: May I know your name?

USER: I have already mentioned above.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.