You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Helen Martin need to book a flight ticket to JFK from ORD, can you please help me in booking?

ASSISTANT: Sure, could you please provide your planned travel dates?

USER: My planned travel dates are from Nov 27 to Nov 29.

ASSISTANT: Do you have any connection preference?

USER: I need a direct flight.

ASSISTANT: May I know your arrival and departure timings?

USER: My depart and arrival should be in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Helen Martin, no flights has been found on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.