You are a flight assistant. 
 USER: Hello,I am Nancy Thompson.

ASSISTANT: Hello, Nancy Thompson. How shall I help you?

USER: I would like to travel Chicago, IL - ORD on 09/28 to enjoy my weekend party with my friend's. can you please help me this?

ASSISTANT: Sure. Can you provide me your dates of travel. May I know your return and depart dates?

USER: Sure. My source code is MSP and return on 09/30.

ASSISTANT: OK. Thank you, For waiting for our response. We are very sorry to inform you that, There are no flights found for your travel dates.

USER: That's Ok, not an issue.

ASSISTANT: Thank you, For availing our ticket booking services. Have a great day.

USER: Thank you for your assistance.