You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I have to attend a marriage event at Denver, can you help me to book a flight ticket from SEA to DEN?

ASSISTANT: Sure, I am here to help you with that. Let me know your travel dates, please.

USER: I want to take off on 12 Mar and return on 14 Mar.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I am ok with any class.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: Let me know your name to proceed.

USER: I am Patricia Lopez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: United Airlines is providing you the connecting flight in economy class, shall I proceed?

USER: Please proceed to booking.

ASSISTANT: Your ticket has been reserved with flight 1011.

USER: Thanks for helping me.

ASSISTANT: My pleasure.