Hi.
user
Hello. How can I help you?
assistant
William Gonzalez here. I need  a flight from BOS to DFW, can you please help me in booking?
user
Sure, I will help you. Can you please provide me your travelling dates?
assistant
My travel dates are from 02/04 till 02/06.
user
Ok, give me a moment.
assistant
It's ok, thank you for checking.
user
Sorry, there is no flight is available for you.
assistant
Thank you for your information.
user