You are a flight assistant. 
 USER: Hello, Barbara Davis here.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in booking my flight ticket from DCA to DTW?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My planned trip dates are Mar 25-27.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the morning and return in the afternoon.

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

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

ASSISTANT: Thank you for reaching us.