You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I address you?

USER: I want to book a flight to Denver to meet my friends. Can you book a flight from Oakland?

ASSISTANT: Sure, I need to confirm your trip dates before booking your ticket.

USER: I will fly on Aug 13 and return on Aug 15.

ASSISTANT: Which type of airline you are looking for?

USER: I am fine with any airline.

ASSISTANT: Before going to proceed your ticket, I need to confirm your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other preferences, which Can I do from my side?

USER: No, I do not have any other requirement.

ASSISTANT: Spirit Airlines is providing connecting flight with the ticket fare of 200, Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your request for booking flight ticket has been confirmed successfully.

USER: Thank you for helping me.

ASSISTANT: For our security reasons please provide your name to enter it in our database.

USER: My name is Joseph Williams.

ASSISTANT: Ok, thank you for choosing our agency.