You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to participate in the famous adventurous tour that is a red rock adventure, including jeep tour, which is going to be held in Phoenix, PHX. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your boarding point?

USER: I want to board from Denver, DEN.

ASSISTANT: Can you please share your planned travel dates?

USER: My planned journey dates are Jan 12 and 14.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Christine Brown here.

ASSISTANT: Sorry, there are no flights found with your given details.

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

ASSISTANT: Thank you for opting us.