You are a flight assistant. 
 USER: Hello, I am Susan Mitchell.

ASSISTANT: Hello. How can I help you today?

USER: I want to go for a business meeting at Dallas. And I want to start my journey from NV - LAS to TX - DFW.

ASSISTANT: Ok.

USER: Can you help me in booking my flight ticket.

ASSISTANT: Sure, can I get  your date of journey?

USER: my departure date: 11/28 and arrival date: 11/30.

ASSISTANT: Please wait for a while, I will get back to you.

USER: I need a flight with 0 connections. Sure.

ASSISTANT: Thanks for waiting. We found that there was no flight existing with your information. Thank you for reaching us.

USER: Thank you for your response.