You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: As my plan to take a admission at art institute in, Las Vegas, can you help me to book a flight ticket with in the fare limit 200?

ASSISTANT: Sure, please mention if you need any connection.

USER: I prefer connecting flight.

ASSISTANT: Share your travelling dates please.

USER: 03/09 and 03/11 are my travelling dates.

ASSISTANT: Could you please mention your journey airport codes?

USER: I want to start from Denver, CO-DEN to Las Vegas, NV-LAS.

ASSISTANT: May I know your good name please?

USER: I am Stephanie Allen.

ASSISTANT: Thank you for your details. we didn't found any flights available according to your request.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.