You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I aid you?

USER: I am Stephen Martin. I am planning to visit Museum of Fine Arts at Philadelphia, could you please help me with booking a flight ticket from DFW to PHL?

ASSISTANT: May I know your planned trip dates?

USER: I would like to depart on Dec 10th and return on Dec 12th.

ASSISTANT: Do you need any other requirements?

USER: I need a connecting flight.

ASSISTANT: Can you please share me your timings of travelling?

USER: Make sure that my depart time must be evening and return time must be afternoon.

ASSISTANT: We are sorry to inform you that there is no flight found with your matching details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.