You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Alexander Phillips. Can you please reserve me a flight ticket from Los Angeles, CA - LAX to Detroit, MI - DTW?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are 08/26 - 08/28.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.