Hello,.
user
Hello, How can I help you?
assistant
I am Jack Williams. I want to meet my family friend, so please help me for booking a flight ticket.
user
Will you please provide the details of your journey?
assistant
My source and destinations are CO-DEN, MN-MSP. And my departure day is Dec/1, return day is Dec/3.
user
Just  a minute I will let you know the information.
assistant
OK.
user
Sorry, No flights are found on your given information.
assistant
OK, thank you for your service.
user
Thank you for reaching us.
assistant