You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Young.

ASSISTANT: How may I assist you?

USER: I need to book a flight ticket from DFW to PHL, can you help me to book a flight ticket?

ASSISTANT: Sure, I am ready to help you. Could you please share your travelling dates?

USER: My preferable journey dates are July 02 and July 04.

ASSISTANT: Do you need connecting flight or direct flight?

USER: I prefer connecting flight.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: Do you have any specifications?

USER: I would like to return in the morning time.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.