You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Andrew Wilson.

ASSISTANT: How may I assist you?

USER: I want to book a flight ticket to NY-EWR, help me in booking my flight ticket from TX-DFW.

ASSISTANT: Could you please mention your travel dates?

USER: 02/27 is my starting date, my return date is on 02/29.

ASSISTANT: Please provide connections limit?

USER: I need a connecting flight.

ASSISTANT: No flights found.

USER: Its ok, thank you.

ASSISTANT: Thanks.