You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Please help me to book a flight ticket from JFK to ORD.

ASSISTANT: Sure, can you please share your journey dates?

USER: My trip is in Dec from 29th to 31st.

ASSISTANT: Do you have any connection limit?

USER: I prefer to board a connecting flight.

ASSISTANT: Please let me know your name.

USER: Margaret Gonzalez here.

ASSISTANT: Are there any more specifications?

USER: My depart time should be in afternoon.

ASSISTANT: Sorry, we could not find any flights matching your specifications.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.