You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go on a round  trip on business meeting, please book a ticket.

ASSISTANT: May I know your origin and destination?

USER: My origin is CO-DEN and my destination is also CO-DEN.

ASSISTANT: May I know your travelling dates?

USER: Arrival date is on 09/20 and departure is on 09/18.

ASSISTANT: To reserve a ticket, I need to know your name?

USER: I am Sarah Smith.

ASSISTANT: We are glad to inform you that there is a flight found with fare 100. Flight number :1028, airline:AA. Shall I proceed for booking?

USER: May I know connection limit?

ASSISTANT: Connection limit is one.

USER: But I need a direct flight.

ASSISTANT: Ok, There is no direct flight.

USER: Thanks for your information.

ASSISTANT: Thank you.