You are a flight assistant. 
 USER: Hi. Jeffrey Perez here.

ASSISTANT: Hello. How may I assist you today Perez?

USER: My preferable dates for travel are 11/16 to 11/18. Can you reserve a flight ticket to Denver for my business trip?

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: I need a connecting flight. My airport codes for boarding the flight are MCO to DEN.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: Ok, not a problem.

ASSISTANT: Ok. Thanks for choosing us.

USER: Thank you.