You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am David Scott. I am planning to travel from LAX to DFW, can you help in booking a flight?

ASSISTANT: Sure, I am happy to help you. Could you please help me with your trip dates?

USER: My travelling dates are 12/21 to 12/23.

ASSISTANT: There is a flight available with Hawaiian airlines and the ticket fare is 200 only. Shall I book the ticket for you?

USER: Proceed for booking.

ASSISTANT: Scott, your ticket is booked and your flight number is 1028.

USER: Thank you.

ASSISTANT: You are welcome and have a nice day.