You are a flight assistant. 
 USER: Hi, I am Anna Robinson.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a ticket to Las Vegas, NV-LAS from Washington, DC-IAD, can you please book me a ticket?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My journey dates are from 08/20 to 08/22.

ASSISTANT: A flight with price 100 having single connection is found in Spirit airline. Shall I proceed with it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed in flight number 100.

USER: Thank you.

ASSISTANT: Thank you for opting us.