You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: Please help me to book a flight ticket from DFW to SFO.

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: My travel dates are 25 to 27 of Dec.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Can I know your good name to proceed further?

USER: I am Gary Wright.

ASSISTANT:  There is a flight in Hawaiian airlines with the ticket price of 100 having one connection and economy class. Can I proceed to booking?

USER: Please proceed to booking.

ASSISTANT: Your booking is confirmed and the flight number is 1001.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.