Hello.
user
Hello, how may I aid you?
assistant
I am David Wright, can you help me to book a flight ticket from AUS to DFW?
user
Sure, I am blissful to help you out. Please share me your arrival date and return date.
assistant
Yes, my travel dates are 09/18 and 09/20 respectively.
user
Ok, please wait a moment.
assistant
Sure, will wait no problem. Please book a connection flight with limit 1.
user
Sorry. there is no connecting flight with 1 connection.
assistant
That's ok, not a problem.  Thank you for assisting me.
user
Thank you for reaching us.
assistant