You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can assist you at this moment?

USER: Can you please help me in booking the flight ticket from LAS to ORD?

ASSISTANT: Sure, I will assist you with that. Could you please mention your preferable travel dates?

USER: My planned dates of journey are Feb 26 and Feb 28.

ASSISTANT: May I know your name for further process?

USER: My name is Benjamin Hall.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No, thanks for asking.

ASSISTANT:  Do you have any limits on number of connections?

USER: I prefer connecting flight for this trip.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait for your information.

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

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching us.