You are a flight assistant. 
 USER: Hi, my name is Catherine Adams.

ASSISTANT: Hello, how can I serve you?

USER: I would like to travel to Las Vegas to enjoy Innovation Festivals with my cousin. Can you book a flight ticket with fare 200?

ASSISTANT: Sure. Let me know your travelling dates.

USER: Sure, I need to fly on 05/14 and 05/16.

ASSISTANT: To proceed booking I need your airport codes.

USER: Sure, I am heading towards LAS from CLT.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a direct flight.

ASSISTANT: Thanks for waiting, there is a direct flight available. Airline: Spirit and flight number:1001, price 100. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been confirmed.

USER: I appreciate your service.

ASSISTANT: Thank you for choosing us.