You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you help me to book a flight ticket from LAS to SEA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travel dates are June 27 and June 29.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: I am comfortable with any class.

ASSISTANT: Please mention your name.

USER: I am Samantha Martinez.

ASSISTANT: The Delta airlines providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: Please ensure that I would like to prefer normal cost airline.

ASSISTANT: It is normal cost.

USER: Please proceed to book.

ASSISTANT: Your ticket is booked. The flight number is 1022.

USER: Thank you.

ASSISTANT: Welcome, have a great day.