Hello,.
user
Hello, how can I aid you?
assistant
I am Samuel Wright. Can you please book  a flight ticket from LAX to IAH?
user
Sure, can you share your trip dates?
assistant
My journey dates are, depart on Apr 28th and arrival on Apr 30th.
user
Do you have any preferences?
assistant
My return flight time should be in the evening. And I need a connecting flight.
user
Sorry, there is no flight on your given dates.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching us.
assistant