You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from HOU to OAK to attend seminar, can you help me in booking?

ASSISTANT: Sure, let me know your planned journey dates?

USER: I am departing Nov 25 and return on Nov 27.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other preferences?

USER: I do not have any other preference.

ASSISTANT: May I know your good name?

USER: My name is Nancy Green.

ASSISTANT: We found a direct flight 1000 in Spirit airline  with fare 100 and class is economy. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.