You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Michael Nelson. I want to book a ticket from ORD to JFK, can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are 07/15 and 07/17.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT:  Do you have any particular time for departing and returning?

USER: I want to return in the morning.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.