You are a flight assistant. 
 USER: Hello, I am Elizabeth Anderson.

ASSISTANT: Hello. How may I be of your help?

USER: I am planning to visit Red Rock canyon national conservation area at Las Vegas, NV - LAS. Can you help me to book a direct flight?

ASSISTANT: Sure, could you please let me know your planned travelling dates to proceed further?

USER: I want to fly on 05/27 and recur on 05/29.

ASSISTANT: Kindly mention your source airport code.

USER: I want to board from Detroit, MI - DTW.

ASSISTANT: Just a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no issues.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your help and support.