You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to attend a comic con in Chicago, could you please help me to book  a flight ticket with single connection?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: I would like to depart on Nov 19th and my return date will be on Nov 21st.

ASSISTANT: Please share me your airport codes.

USER: My boarding and landing airport codes are MCO and ORD.

ASSISTANT: Is there any other specifications?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name?

USER: I am John Davis.

ASSISTANT: We found a connecting flight with an Delta airlines, flight number:1002.

USER: That's perfect, you can proceed with the booking.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for picking us.