You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: Sure, you can call me as Kathleen Hill.

ASSISTANT: How may I assist you Kathleen Hill?

USER: I have a plan to visit the Mirage Hotel for dinner with my husband, so I need to book a flight ticket to Las Vegas. Can you help me to book a connected flight?

ASSISTANT: Sure, could you please provide me your planned journey dates?

USER: Ok, I planned to travel on 07/25 to 07/27.

ASSISTANT: May I know your budget for flight ticket?

USER: Ok, my budget is 500.

ASSISTANT: Can you please provide me your source and destination airport codes?

USER: My source is Seattle, WA - SEA. And destination code is NV - LAS.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights found with your given dates.

USER: No problem, I will find another way to travel. Thanks for your prompt response.

ASSISTANT: Thank you.