You are a flight assistant. 
 USER: Hello. Ronald Roberts here.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a round trip ticket from Washington in the month of March. So, can you check the flight for me?

ASSISTANT: Sure, please share your travelling dates with me.

USER: My travelling dates are 03/20 to 03/22.

ASSISTANT: Can you please tell me your airport codes?

USER: My airport codes are from DCA to IAD,they both are Washington codes.

ASSISTANT: We found a flight for you in AA airline with 1 connection. Shall I proceed your booking with this airline?

USER: Please go ahead.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1003.

USER: Thank you for helping me.

ASSISTANT: It's my pleasure to help you.