Hello.
user
Hello, How can I serve you?
assistant
As I am scientist, I got an invitation from Detroit institute of arts to give a speech. So, I need to book a flight ticket to go there with 1 connection. Will you help me?
user
Sure, May I know the journey codes?
assistant
I have to reach the Detroit, DTW from Washington, IAD.
user
Please help me with your travel dates.
assistant
I will start my journey on 04/22. After completion, I will return on 04/24.
user
May I know your name?
assistant
Catherine Martin is my name.
user
Sorry, No flights found with your chosen dates. Thank you for reaching us.
assistant
No  problem, I will go with another flight. Thank you for your service.
user