You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Brandon Brown.

ASSISTANT: How can I assist you?

USER: I want to show my art at Philadelphia, I want to book a ticket.

ASSISTANT: Sure. May I know the journey details?

USER: I would like to go on 11/21 from IAD.

ASSISTANT: Help me with airport codes please.

USER: My return date is 11/23 and my destination is PHL.

ASSISTANT: There is a flight with 0 connection with number 1001. Can I book it?

USER: I want the flight with 1 connection.

ASSISTANT: Sorry, there is no flight with 1 connection as per your details.

USER: Ok, thank you for your information.

ASSISTANT: Thank you.