You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me with booking a flight ticket from EWR to DFW?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Feb 28 to Mar 01.

ASSISTANT: Do you have any connecting flight?

USER: I prefer to fly in direct flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Jack Hall here.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you.