You are a flight assistant. 
 USER: Hi. I am Rebecca Hall.

ASSISTANT: Hello, how may I assist you today?

USER:  I would like to participate in a mobile food distribution event, will be conducted by soldiers at Las Vegas, NV-LAS. Can you book a connecting flight?

ASSISTANT: Sure, help me with your travel dates.

USER:  My travel dates are 08/05 and 08/07.

ASSISTANT: Where do you want to board?

USER: I will depart from DC- IAD.

ASSISTANT: Please wait.

USER:  Ok.

ASSISTANT: We found a flight on Southwest airline, flight number 1015 with price of 100.

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been reserved.

USER:  Thank you for booking.

ASSISTANT: Thank you for picking us.