You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Cynthia Parker.

ASSISTANT: How can I guide you today?

USER:  I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Chicago. Could you please help me in booking a ticket with fare of 5000?

ASSISTANT: Sure. May I know when your willing to travel?

USER: My travelling dates are 12/16 and return on 12/18.

ASSISTANT: Help me with your airport codes?

USER: My airport codes are IAD and ORD.

ASSISTANT: There is flight available with AA airline with one connection and fare 100. Shall I proceed with booking?

USER: You can proceed with booking and also provide the airline number.

ASSISTANT: Your ticket has been booked with 1016 flight. Thank you for availing us.

USER: Thank you for your help.