You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Nelson.

ASSISTANT: How can I assist you today?

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

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

USER: My travelling dates are 04/26 and 04/28.

ASSISTANT: Please give me a moment.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1012 and the airline is Delta.

USER: Thank you.

ASSISTANT: Welcome, have a great day.