You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to travel from OAK to SEA. Can you help me to book a flight ticket?

ASSISTANT: Sure, please provide your itinerary dates.

USER: I want to travel in the flight on Oct 18 and Oct 20.

ASSISTANT: Which class do you prefer?

USER: I want to return in evening time.

ASSISTANT: May I know your name?

USER: Patrick Hall.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Southwest airlines with flight 1011 is providing a connecting flight and ticket costs you 200 in economy class.

USER: Proceed to booking.

ASSISTANT: Your ticket is confirmed Patrick Hall.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.