You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I help you?

USER: I am Andrew Johnson. I need to attend my friends new restaurant inauguration in Los Angeles, LAX. So, will you help me in booking my flight ticket from Washington, IAD.

ASSISTANT: Sure. Please let me know your travel dates.

USER: My dates of travel are from 04/03 - 04/05. Price range of my ticket should be within 200.

ASSISTANT: Ok. Flight ticket can be booked with airline Southwest, price is 100. Flight number is 1016 with connections 1. Shall I book flight ticket?

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for quick service.

ASSISTANT: Thanks.