You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Anthony Gonzalez here. I would like to visit Detroit, can you help me to book a flight ticket from MSP to DTW?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My preferable dates are 01/11 and 01/13.

ASSISTANT: Please wait for a moment. Sorry to say, no flight is available for you as per your requests.

USER: It's ok, not an issue. Thank you for giving information.

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