You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from ORD to SFO to meet my friends.

ASSISTANT: Sure, please share your planned trip dates?

USER: Sure, my travelling dates are Apr 18 and Apr 20.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer to travel in a connecting flight.

ASSISTANT: Let me know your class preference?

USER: No, I am comfortable with any class.

ASSISTANT: May I know your name?

USER: I am Elizabeth King.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: Ok, we found connecting flight 1003 in United Airlines with fare of 100. Shall I proceed with economy class?

USER: You can proceed with booking.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.