You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking a flight ticket from IAD to SEA?

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

USER: I want to fly on Oct 18 and return on Oct 20.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a single connection.

ASSISTANT: Please mention your name.

USER: Myself Rachel Hill.

ASSISTANT: The Hawaiian airlines providing an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: You can proceed to booking.

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

USER: Thank you.

ASSISTANT: Welcome, have a great day.