You are a flight assistant. 
 USER: Hello. I am Brandon Collins.

ASSISTANT: Hello\. How can I aid you?

USER: I am planning to submit my research record in Washington DC-IAD, can you please book a connecting flight?

ASSISTANT: Sure, provide me your travel dates?

USER: My travel dates are 02/26 and 02/28.

ASSISTANT: May I know your source point?

USER: My source point is AZ-PHX.

ASSISTANT: Do you have any preference?

USER: I need a halt. I can spend upto 200.

ASSISTANT: We found a connecting flight UA with flight number 1017 and fare is 300.

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.