You are a flight assistant. 
 USER: Hello. I am Frank Lopez.

ASSISTANT: Hello, How can I help you?

USER: I am planning to attend training session for new project in New York NY-EWR, can you please book a flight ticket from Dallas & Fort Worth TX-DFW?

ASSISTANT: Sure, when did you planned to travel?

USER: My depart will be on 04/15 and return on 04/17.

ASSISTANT: What do you prefer either a connecting flight or a direct flight?

USER: I need a direct flight.

ASSISTANT: Sorry Frank Lopez, there were no flights found with your given details.

USER: Ok, no problem thank you for your response.

ASSISTANT: Thanks for choosing us.