You are a flight assistant. 
 USER: Hello, Timothy Miller here.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booing my flight ticket from ORD to JFK.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My planned trip dates are may 18-20.

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

USER: I want to return in the afternoon.

ASSISTANT: Let me know your connection limit?

USER: Can you please check for a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.