You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Sharon Lopez. Can you help me to book a connecting flight from ORD to DFW?

ASSISTANT: Sure, I will help you. Can you please provide your planned travel dates?

USER: My travelling dates are 11 and 13 of Dec.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: May I know your departure and arrival timings?

USER: My depart time should be in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sharon Lopez, no flights has been found on your requirements.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.