You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Washington DCA.

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: Can you help me with booking a ticket from DEN on the name Amanda Jones? My travelling dates are from 02/28 to 03/01.

ASSISTANT: Sure, could you please help me with your source codes?

USER: My origin airport is DEN.

ASSISTANT: There is a direct flight which matches your travelling dates. Shall I proceed with booking?

USER: No, I need a connecting flight. Don't proceed further.

ASSISTANT: Thank you for approaching us.

USER: Thank you.