You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: I want to participate in the multi-car 50 mile canyon road test drive which is going to held at Denver, DEN.

ASSISTANT:  Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: My preferable travel dates are June 21 and 23.

ASSISTANT: May I know your airport codes to reserve your seat?

USER: My source is from Dallas & Fort Worth, DFW.

ASSISTANT: What is your max connection limit?

USER: I prefer one connection for this journey.

ASSISTANT: Do you need any other requirements?

USER: I need to catch my return flight in the afternoon time.

ASSISTANT: May I know your name to proceed your booking.

USER: Please reserve the flight ticket under the name of Eric Smith.

ASSISTANT: We regret to inform you that there is no flights going on your way.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for contacting us.