You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Shirley Turner here.

ASSISTANT: How can I aid you?

USER: Can you please reserve me a flight ticket from ORD to DEN?

ASSISTANT: Sure, please provide me your travel dates.

USER: Sure, my travel dates are from June 27 to June 29.

ASSISTANT: Do you have any connection limit?

USER: I need a connection flight.

ASSISTANT: Let me know your class preference.

USER: I don't have any specific class.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Delta airlines is providing you the connecting flight in economy class which departs at 11 AM and arrives at 18 PM. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight - 1029.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.