Hello.
user
Hello. How may I help you today?
assistant
I need a flight ticket from BOS to DFW to meet my sister, can you reserve a flight ticket for my journey?
user
Ok, I am here to help you with that. Can I know your planned trip dates?
assistant
Thank you and my planned dates that I want to move is on Mar 19 and  will return on Mar 21.
user
May I know your name?
assistant
Sure, my name is Dorothy Davis.
user
Do you have any other requirements?
assistant
I am looking for a single stop flight.
user
Ok, wait for a minute.
assistant
Sure, I can wait for your response.
user
We are regret to inform you that, there are no flights available based your travelling dates.
assistant
Ok, no problem with that one.
user
Thank you for approaching us. Have a nice day.
assistant
Thank you for your help.
user