Hi, myself Barbara Lopez.
user
Hello, how can I help you today?
assistant
I have to attend my friend's birthday party at Chicago, can you please help me to book the flight ticket from LAX to ORD?
user
Ok, please tell your travelling dates.
assistant
I will depart on 07/17 and also book the return ticket on 07/19.
user
Ok, please wait.
assistant
Sure.
user
Sorry to let you know but there is no flight available on your request.
assistant
No problem, thank you for the information.
user
You are most welcome.
assistant