Hi.
user
Hello.
assistant
I am Andrew Collins.
user
How may I help you now?
assistant
I want to book  a flight ticket to visit 16th street mall to buy accessories for my sister's marriage at CO-DEN.
user
Ok, please mention your travel dates?
assistant
11/11 and 11/13 are my preferable travelling dates.
user
Ok, mention your origin airport code?
assistant
 I would like to start from NC-CLT.
user
Sorry, no flights are available with your criteria.
assistant
No issue.
user
Thanks for reaching us, have a nice day.
assistant
Thank you for your service.
user