You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Please book a flight ticket from DCA to OAK.

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are 10/28 and 10/30.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Can I have your name please?

USER: I am Timothy Smith.

ASSISTANT: Southwest airlines flight 1005 available with connection and fare is 100, shall I confirm this economy class flight?

USER: Yes, please confirm it.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.