You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Kevin Williams. I am planning to travel from LAS to HOU, help me in booking a flight?

ASSISTANT: Sure. Could you please mention your preferable travel dates?

USER: My travelling dates are Jan 13 to 15.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: I want to return in evening flight.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: Yes, I need 1 connection flight.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.