You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to go for a Death Valley Adventure in Dallas & Fort Worth, TX - DFW. Can you book a flight ticket with one connection?

ASSISTANT: Sure, can I know the travel dates please?

USER: My journey dates are 03/25 - 03/27.

ASSISTANT: Can I know the source code please?

USER: Sure. Denver, CO - DEN is my source code.

ASSISTANT: May I know your name to proceed further?

USER: I am Gary Williams.

ASSISTANT: Sorry Gary, there are no flights with single connection.

USER: Thanks for the help.

ASSISTANT: Thank you for approaching us.