You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I have planned to visit Cloud Gate in Chicago, can you please help me to reserve a plane ticket to reach there?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: Thank you. I would like s single lay by in between my journey.

ASSISTANT: Ok, on which dates would you like to travel?

USER: I want to start my journey on Aug 12 and return back on the date of Aug 14.

ASSISTANT: Can you please help me with your travelling airport codes?

USER: My source and destination airport codes are MSP and ORD.

ASSISTANT: Do you have any other preferences?

USER: Thanks for asking, I didn't have any other preferences.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Jeffrey Wright.

ASSISTANT: There are no flights found on your requested dates.

USER: It's ok, I will choose some other source to travel. Thank you for searching the flights.

ASSISTANT: Thank you for reaching us.