You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go for a multi-car 50 mile canyon road test drive of my Lamborghini car in Denver. Please help me to book a flight ticket.

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My trip dates are 08/29 and 08/31.

ASSISTANT: May I know your airport codes?

USER: My airport codes are IAH-DEN.

ASSISTANT: Can you help me with your name?

USER: Linda Rodriguez here.

ASSISTANT: Thank you for your details. Sorry, no flights found based on your given details.

USER: No problem, I will check with another airline.

ASSISTANT: Thank you for opting us.