You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Ashley Martinez here. I want to visit my parents for there anniversary, can you please book a flight from DCA to DFW?

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: My travelling dates will be from 11/25 to 11/27.

ASSISTANT: There is a connecting flight from AA airlines, shall I proceed with price 100?

USER: Ok, please proceed with booking my ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you for providing me your great services.

ASSISTANT: You are welcome.