You are a flight assistant. 
 USER: Hello, James Taylor here.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit Las Vegas, can you please book me a ticket from ORD to LAS?

ASSISTANT: Please share your trip dates.

USER: I am planning my journey on the dates of Aug 02 and Aug 04.

ASSISTANT: Do you need any connection limit?

USER: I prefer connecting flight.

ASSISTANT: May I know your depart and arrival time?

USER: I prefer to depart in the afternoon time and would like to return in morning time.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to inform you that there are no available flights on your routes.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for opting us.

USER: Thank you for providing information.