Hi.
user
Hello\. How can I aid you?
assistant
I am Lisa Robinson. I want to  book a flight ticket to attend a party at  MI-DTW from TX-IAH. Can you help me?
user
Sure, may I know your journey dates?
assistant
10/02 and 10/04 are my travelling dates.
user
Ok, please wait a moment. Sorry to inform you that there is no flight available on your route.
assistant
NO issue. Thank you for your help.
user
Thank you for contacting us.
assistant