You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am planning to attend a Hockey competition in Denver DEN to meet my best friend. Can you find a flight ticket for me?

ASSISTANT: May I know your travelling dates?

USER: Ok, my itinerary dates are on Mar 18 and return on Mar 20.

ASSISTANT: From where you want to start your journey?

USER: Yes, I want to start my journey from Houston HOU.

ASSISTANT: Do you have any requirements?

USER: No, I don't have any other requirements.

ASSISTANT: May I know your name?

USER: Yes, I am Linda Taylor.

ASSISTANT: You have a direct flight 1000 in Spirit airline and price 200, Shall I proceed?

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your ticket has been booked in economy class.

USER: Thank you for your service.

ASSISTANT: Thank you.