You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Help me in booing a flight ticket from ORD to IAH.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I planned to travel in between Nov 20 and Nov 22.

ASSISTANT: Do you require any stopovers in your journey?

USER: Connected flight is required.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Donald Collins here.

ASSISTANT: There is a connected flight in AA airlines with the fare 100.

USER: Proceed to book it.

ASSISTANT: Your booking is done.

USER: Thanks for you help.

ASSISTANT: Thank you.