You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I reach out to you?

USER: I am Sharon Williams, I wan to book a flight from Las Vegas, NV-LAS to attend live music concert. Can you book a flight to Chicago IL-ORD?

ASSISTANT: Sure, do you need a way station with in your route?

USER: Yes, I need a halt in between the journey.

ASSISTANT: please let me know when are you planning to travel.

USER: I will travel on 08/19 and return on 08/21.

ASSISTANT: Thanks for giving your details. There are no flights available at this moment matching your request.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for opting us.