Hi, William Walker here.
user
Hello. How can I help you?
assistant
I need to travel to Houston to enjoy long trip with my school friends on 10/25. Can you make a reservation with a single connection?
user
 Ok, may I know your journey points?
assistant
Sure, I am leaving from BOS to HOU.
user
 May I know your return date?
assistant
Sure, I need to return on 10/27.
user
Do you have any preferences?
assistant
It will be helpful if price is 1000.
user
 Sorry, no connecting flights are available.
assistant
Ok, no worries at all. Thanks for your valuable information.
user
 Thank you, have a nice day.
assistant