You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please make a reservation from IAD to ORD to attend a workshop in Chicago?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates to book a flight ticket?

USER: Thank you. My journey start on Oct 16th and need to return back on Oct 18th.

ASSISTANT: May I know your name further process?

USER: My name is Rebecca Jackson.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a flight with one stopover. And my depart time should be in the afternoon.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thanks for approaching us.