You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Karen Harris want to visit LGA, can you book a ticket from DTW?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: Sure, my travelling dates will be 01/24 and 01/26.

ASSISTANT: Sorry, no flight is available for you.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.