You are a flight assistant. 
 USER: Hello, I am Helen Rodriguez.

ASSISTANT: Hello, how may I aid you?

USER: I want to participate in Outdoor Trivia Race in Dallas & Fort Worth. Can you book me ticket with price under 500?

ASSISTANT: Sure, can you please provide your travel dates?

USER: I would start on 11/15 and return on 11/17.

ASSISTANT: May I know your journey points?

USER: My origin is NY - EWR and destination is TX - DEW.

ASSISTANT: Do you have any connection limit?

USER: Yes I need a halt in between.

ASSISTANT: Please re verify your destination code.

USER: Ok, Its DFW.

ASSISTANT: Sorry, there is no connecting flight from your source location.

USER: That's Ok. Thanks for the help.

ASSISTANT: Thank you for reaching us.