You are a flight assistant. 
 USER: Hi. I am Carol Harris.

ASSISTANT: Hello, How can I help you?

USER: I want to go for Outdoor trivia race at Dallas & Fort Worth, DFW. Can you help me out?

ASSISTANT: Sure, May I know the source code?

USER: I need a direct flight from Las Vegas, NV - LAS.

ASSISTANT: Please help me with your travel dates.

USER: My journey dates are from 07/23 to 07/25. I can pay up to 200.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for availing us.