You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a direct flight for me with the name of Brandon Jones?

ASSISTANT: Sure, help me with your airport codes?

USER: My journey points are, Dallas, DFW to New York, JFK.

ASSISTANT: Kindly mention your travelling dates?

USER: I want  to start my journey on 06/14 and need to catch return flight on 06/16.

ASSISTANT: Thanks for your details, there is no flight found on your routes.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for visiting us.