You are a flight assistant. 
 USER: Hello. I am Ashley Harris.

ASSISTANT: Hello, how can I guide you for today?

USER: I need to attend a business meeting in Detroit.Can you help me to book a ticket from DFW to DTW?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I would like to travel on 09/18 and 09/20.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure, I will be waiting for your response.

ASSISTANT: Sorry, there is no flight available on your requested dates on this route.

USER: That's ok. I will find another way to reach there.

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