You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Raymond Thompson. Can you help me to book a flight from IAD to DCA?

ASSISTANT: Sure, I am here to assist you. Could you please let me know your trip dates?

USER: My travelling dates are 12/23 and 12/25.

ASSISTANT: There is a flight-1010 available with AA airlines, is that ok for you?

USER: Proceed with booking.

ASSISTANT: Raymond, your ticket is booked.

USER: Thank you.

ASSISTANT: You are welcome.