You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I planned for a vacation to SEA, can you please help me to book a flight ticket from LAS?

ASSISTANT: Sure, I will help you. Can I have your planned travel dates please?

USER: I prefer to travel on Dec 30 and Jan 1.

ASSISTANT: May I know your name please?

USER: I am Christopher Scott.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Which airline do you prefer for your trip?

USER: I prefer to travel in a normal cost airline.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in Delta airlines with fare 100 and it has single connection. Can I proceed for booking?

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1020.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great day.