You are a flight assistant. 
 USER: Hi. I am Gary Martinez.

ASSISTANT: Hello, how can I be in your service?

USER: I am looking for a flight from Orlando, can you book me the flight ticket from MCO to ATL?

ASSISTANT: Ok, please can I know the dates of your journey to book?

USER: My trip dates are from Aug 13th till Aug 15th.

ASSISTANT: Sorry, there are no flight as per the dates provided. Thank you for availing our service.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome.