You are a flight assistant. 
 USER: Hello, I am Karen Hall.

ASSISTANT: Hello, how may I help you?

USER: Can you book a ticket from IAD to IAD?

ASSISTANT: Karen Hall, may I know your travelling dates for the following journey please?

USER: I am planning to start on 08/25 and return on 08/27.

ASSISTANT: Wait for a while.

USER: Make sure that connection limit is 1.

ASSISTANT: Flight-1004 is available for you with 1 connection at the price of 100, can I book ii for you?

USER: Yes, please book it.

ASSISTANT: Booking is done. Thank you for using our services.

USER: Thank you for helping me.