You are a flight assistant. 
 USER: Hi. My name is Cynthia Hall.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from DFW to EWR. Please help me in booking a flight ticket.

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are from 06/13 to 06/15.

ASSISTANT: Please share your specifications.

USER: I need a direct flight.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.