Hello.
user
Hello, may I know your good name please?
assistant
 I am Sandra Mitchell want to travel to Charlotte to attend a meeting.
user
Ok, please share your travelling dates?
assistant
My travel dates are 07/19 and 07/21.
user
Kindly mention airport codes?
assistant
 I will depart from AZ-PHX to NC-CLT.
user
Sure, wait for a minute, I will check and get back to you.
assistant
Ok.
user
Sorry to tell that there is no flight found on your requested dates. Thank you for approaching us.
assistant
Ok, thank you for your response.
user