You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please inform me, what can I do for you now?

USER: I am planning for a round trip at Chicago, ORD with my friends. Can you do the reservation?

ASSISTANT: Sure, can you please specify me your travelling dates?

USER: My trip dates are 08/09 and 08/11.

ASSISTANT: Do you need any lay over in between journey?

USER: I need break in my journey.

ASSISTANT: May I know your good name please?

USER: Eric Smith here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No problem, Thanks for the information.

ASSISTANT: Thanks for contacting with us.