You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to meet my childhood friend in IAD, can you please help me in booking a flight ticket from OAK?

ASSISTANT: May I know your desired travel dates please?

USER: I would like to fly on Oct 12 and return on Oct 14.

ASSISTANT: Can I know your name please?

USER: Myself Mary Allen.

ASSISTANT: Do you have any specifications?

USER: I need a single connection.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked, flight number 1005 with United Airlines.

USER: Thank you.

ASSISTANT: Thank you for opting us.