You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER:  I am Anthony Miller want to travel to PA-PHL to visit Philadelphia City Hall. Can you book a ticket from NV-LAS?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: My travel dates are 09/19 and 09/21.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found 1000 Delta airlines with single connection with price 200. Shall I proceed with the booking?

USER: Ok, you can proceed.

ASSISTANT: Your booking has been confirmed.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us.