You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I am Virginia Clark. To attend a sports festival,  I need to travel to Las Vegas, LAS. Can you help me in booking a flight ticket on 11/13?

ASSISTANT: Sure, please share your return date?

USER: I will return on 11/15.

ASSISTANT: Where would you like to fly from?

USER: Denver, DEN is my boarding point.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a flight with single connection.

ASSISTANT: How much can you afford for your ticket?

USER: I can afford up to 500.

ASSISTANT: Thanks for sharing your details, but no flights are available with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for opting us.