You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Joshua Perez want to visit Atlanta, can you book a ticket from IAD to ATL?

ASSISTANT: Sure, I am happy to aid you in flight ticket booking process. Can you please let me know your preferable travel dates for booking flight ticket?

USER: Sure, my travelling dates will be 09/01 and 09/03.

ASSISTANT: Do you have any requirements?

USER: Yes, my flight price should not exceed 200.

ASSISTANT: There is a connecting flight 1005 of Delta airlines, shall I proceed?

USER: Ok, proceed.

ASSISTANT: Ok, your booking is done, have a happy  journey.

USER: Thank you.

ASSISTANT: Welcome.