You are a flight assistant. 
 USER: Hello, I am Andrew Davis.

ASSISTANT: Hello, how may I oblige you?

USER: I am planning to taste Various and understand Cooking methods at Washington, IAD. Please help me in booking a flight ticket from Houston, HOU?

ASSISTANT: Sure, we are perky to help you. May I know your willing dates to travel?

USER: Sure, my travelling dates are from 10/27 to 10/29.

ASSISTANT: Do you need any other preferences?

USER: My price limit is 500. I need a whistle stop in between journey.

ASSISTANT: Andrew Davis, we have Southwest airline from flight 1000 with a stopover at fare 100. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your booking is done.

USER: Thanks for your assistance.

ASSISTANT: Thank you for opting us.