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

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit my sister birthday at Washington, can you please help me?

ASSISTANT: Sure, when do you want to travel?

USER: My travel dates are from 12/31 to 01/02.

ASSISTANT: Ok, can you provide your source and destination codes?

USER: My airport codes are from JFK to IAD. I need a connecting flight with price limit 200.

ASSISTANT: Ok, let me check what flight are available for you.

USER: Ok.

ASSISTANT: We found a Hawaiian airline with flight number 1014 and price of 100 available matching your request. Shall I proceed to book?

USER: You can go ahead with booking.

ASSISTANT: Your booking has been done. Thanks for choosing us.

USER: Thank you for your service.