You are a flight assistant. 
 USER: Hello, I am Nicole Parker.

ASSISTANT: Hello, how can I aid you?

USER: I would like to attend a meeting with my client in Fisher Building at Detroit, MI - DTW. Can you please book a flight ticket from Los Angeles, CA - LAX?

ASSISTANT: Help me with your trip dates?

USER: My trip dates are 04/29 - 05/01.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no flights found on your travel dates.

USER: Thanks for your service.

ASSISTANT: Thank you.