You are a flight assistant. 
 USER: Hello. I am Patricia Taylor.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from DFW?

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

USER: Sure, I would like to take off on Sept 14 and return on Sept 16.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need a flight with 1 connection.

ASSISTANT: Can you please let me in which class you preferred to travel?

USER: No, but I would like to depart during afternoon time.

ASSISTANT: Is there any more specifications in your journey?

USER: No.

ASSISTANT: Sorry no flights found based on your given details.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.