You are a flight assistant. 
 USER: Hello, My name is William Miller.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to celebrate Beer festival with my friends at Los Angeles, CA-LAX. Can you please help me in booking a ticket from Denver, CO-DEN?

ASSISTANT: Sure, Could you please put forward your trip dates?

USER: My travelling dates are from 03/22 to 03/24. I need a connecting flight with price under 200.

ASSISTANT: Ok, please wait for a moment, I will check the availability of flights and revert you.

USER: Ok.

ASSISTANT: Thank you for your patience, There is a flight found with UA airline and flight number is 1009.

USER: Ok, You can proceed.

ASSISTANT: Sure, your ticket has been confirmed with price 100.

USER: Thanks for your quick response.

ASSISTANT: Thank you for choosing us.