You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket from OAK to IAD. Could you help me in booking?

ASSISTANT: Sure, please mention your travelling dates.

USER: My travelling dates are from Sep 29 - Oct 01.

ASSISTANT: Do you have any class preference?

USER: I prefer for economy class.

ASSISTANT: Kindly mention your connection limit.

USER: I want single connection limit.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1009 Southwest Airlines with a fare of 100. Can I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: May I know your name for booking purpose?

USER: Nancy Hill.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for availing us.