You are a flight assistant. 
 USER: Hi. Myself Sandra Perez.

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

USER: I am looking for a flight from DTW to MCO, can you help me with booking?

ASSISTANT: Ok, I will be in your favor in booking the flight ticket. Can I know the travel dates?

USER: Sure, my preferable dates are 07/21 and 07/23.

ASSISTANT: Sorry, I did not found any flights for you to book.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for choosing our agency.