You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assistance provide to you?

USER: I like do a simple shopping at DEN, so can you book a ticket from OAK.

ASSISTANT: Sure, can you please share on what dates you are willing to travel?

USER: My itinerary travel dates are May 20 and May 22.

ASSISTANT: Kindly mention your connection limit?

USER: I would like a direct flight.

ASSISTANT: Do you have any other specifications?

USER: I like to return in the afternoon.

ASSISTANT: May I know your name please for further process?

USER: This is Michelle Harris.

ASSISTANT: According to your given information, we have found a flight with an United airlines of flight 1008 in an economy class with connection limit is 0 and return time is 19:00 PM. Would you like me to proceed?

USER: Please proceed.

ASSISTANT: Your seat has been confirmed on name of Michelle Harris.

USER: Thank you for the help.

ASSISTANT: Thank you for connecting with us.