Hello.
user
Hello. How may I help you?
assistant
I am Andrew Lewis. I am planning to book a ticket to visit my family at DTW. Can you please help me out to book a ticket for me?
user
Help me by giving your trip dates so that I can help you easily.
assistant
I would like to travel on 12/22 and return back on 12/24.
user
Can I have your current location?
assistant
My source code is  HOU.
user
Sorry, there is no flight found with your provided travelling dates.
assistant
That's fine.
user
Thanks for contacting us.
assistant
Thank you for your service.
user