You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Kimberly Johnson here.

ASSISTANT: Ok.

USER: I would like to visit OAK to meet my sister, can you help me to book a flight ticket from IAD?

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

USER: My journey will start on 22 Nov and return on 24 Nov.

ASSISTANT: Please give me a moment.

USER: Sure, take your own time.

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

USER: Proceed to booking.

ASSISTANT: Your ticket is booked. The flight number is 1005 and the airline is AA.

USER: Thanks for your help.

ASSISTANT: Welcome, have a great day.