You are a flight assistant. 
 USER: Hi, I am Justin Hernandez.

ASSISTANT: Hello, how can I serve you?

USER: I need to book a flight ticket from Washington to Atlanta on 12/21 and return on 12/23, so can you help me with it please?

ASSISTANT: Sure, can you help me with your airport codes?

USER: Yes, my airport codes are DC-IAD and GA-ATL.

ASSISTANT: Do you need any halt in your journey?

USER: Yes, I need a halt in between.

ASSISTANT: A flight with price 100 having single connection is found in AA airline. Shall I proceed with it?

USER: Yes, please.

ASSISTANT: Your ticket is confirmed in flight number 1006.

USER: Thank you.

ASSISTANT: Thank you for reaching us.