Hello.
user
Hello.
assistant
I am John Lee. I am planning to attend  a Tennis Competition in DEN from CLT. Can you find a flight ticket for me?
user
Sure, I am here to help you. Can you please tell me your preferable dates of your journey?
assistant
Sure, I am planning to travel on these days that is on 11/15 and back on 11/17.
user
Ok, please give me a minute.
assistant
Sure.
user
Sorry for the trouble, there are no flights available on the dates you have given.
assistant
Ok, no problem. Thank you for your valuable information.
user
Most welcome. Thank you for reaching us.
assistant