You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend a workshop at Atlanta, please help me in booking a ticket from ORD to ATL.

ASSISTANT: On which dates do you prefer to travel?

USER: My planned travel dates are on May 26 and May 28.

ASSISTANT: Please let me know if you have any other specifications.

USER: I would like to return in the evening.

ASSISTANT: Can I have your good name please?

USER: My name is Virginia Taylor.

ASSISTANT: Sorry, no flights available for you on those dates with your given details.

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

ASSISTANT: Thank you for reaching us.