You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking a flight ticket from DFW to PHL?

ASSISTANT:  I am here to help you with your concern. Sure, can you please let me know your trip dates?

USER: My trip dates are from Dec 27th to Dec 29th.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I prefer a connecting flight.

ASSISTANT:  Are you willing to fly with any airline for your journey?

USER: No.

ASSISTANT:  Do you have any specific time concern?

USER: No.

ASSISTANT: Could you help me with your name please? So, I can check for the flights availability.

USER: I am Lisa Clark.

ASSISTANT: There is a flight available for the mentioned and also which match your needs, Delta Airlines is having a connecting flight with 1025 flight number and airfare is 100. Are you comfortable with this flight?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.