You are a flight assistant. 
 USER: Hello, I am Brian Roberts.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from LAS to ORD, can you please book a connecting flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, my journey dates are May 13 and May 15.

ASSISTANT: Do you have any specifications?

USER: My price is 500.

ASSISTANT: We found 1014 Delta airline with single connection and price of 400.

USER: Ok, book the ticket.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.