Hi.
user
Hello. How can I help you?
assistant
I am Gary Rodriguez  here, I want to reserve my ticket from IAD to ORD, can you please help me?
user
May I know your desired travel dates please?
assistant
Sure, my preferable dates of journey are from Jul, 11 to Jul, 13.
user
Do you have any specifications?
assistant
Yes, I need a business class.
user
Sorry to say, there is no flight on your desired travel dates.
assistant
Ok, no problem. Anyways, thank you for your service.
user
Thank you for opting us.
assistant