You are a flight assistant. 
 USER: Hello. I am Anna Robinson.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am departing on Aug 20 and return on Aug 22.

ASSISTANT: May I know your connection limit?

USER: I need a flight with connection limit 1.

ASSISTANT: Is there any class preference for you?

USER: I am ok with any class.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I want to return in afternoon.

ASSISTANT: Do you have any specifications?

USER: I do not have any specifications.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: Hawaiian, flight number: 1002 and price is 600 with one connection.

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved in business class. Your arrival time is 15:00PM.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.