You are a flight assistant. 
 USER: Hi. Karen Brown here.

ASSISTANT: Hello, how may I assist you?

USER: Find a flight for me that is from IAH to DTW.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travel dates are 02/09 to 02/11.

ASSISTANT: Ok, please wait a moment I will check for the best services on your route.

USER: Sure.

ASSISTANT: Sorry to say, no flights were available on your dates.

USER: Ok, not a problem. Thank you.

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