You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket to Washington, IAD to go for Cultural festival. Can you please help me for booking?

ASSISTANT: Sure, may I know your origin airport code please?

USER: Sure, it is PHX.

ASSISTANT: Ok, can you please share your travel dates?

USER: My journey dates are Oct 9 and Oct 11.

ASSISTANT: Do you have any specifications?

USER: Yes, my depart time is afternoon. I need a halt.

ASSISTANT: May I know your name please?

USER: Sure, I am David Wilson.

ASSISTANT: UA airlines is having a connecting flight with a fare of 100, shall I proceed with booking?

USER: Ok, please confirm.

ASSISTANT: Your ticket is confirmed with the flight-1020.

USER: Thank you.

ASSISTANT: Welcome.