You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Ryan Nelson, I have a plan to meet my father in Washington. Could you please help me for booking?

ASSISTANT: Ok, can I know your travelling dates?

USER: Ok, my travelling dates are 01/12 and 01/14.

ASSISTANT: Ok, could you tell me your travelling airport codes?

USER: My airport codes are IAD and DCA. Make sure that, my connections limit should be 1.

ASSISTANT: I have found a flight for you with a price of 100. Can I proceed?

USER: Ok, proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Ok, thank you for booking.

ASSISTANT: The flight number is 1021 of Hawaiian airlines. You are welcome.