You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a flight ticket from EWR to ORD, can you help me in booking a flight ticket?

ASSISTANT: Sure, I'm glad to help you with that. May I know on which dates are you planning to depart and arrive?

USER: Sure, my scheduled dates are Nov 15 and Nov 17.

ASSISTANT: Do you need break in between your journey?

USER: I prefer maximum one connection.

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

USER: I would prefer return time at evening.

ASSISTANT: May I know your good name please?

USER: Sure, Carolyn Campbell here.

ASSISTANT: Sorry to inform you that there are 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 choosing us.