Hello.
user
Hello, how may I serve you?
assistant
Could you book my ticket from OAK to IAD?
user
Sure, I will help you. Please send your travelling dates.
assistant
My trip dates are July 12 and July 14.
user
Do you have any preferences?
assistant
I want to depart in the morning.
user
May I know your name please?
assistant
Robert Parker here.
user
Sorry, there is no flight available with your requirements.
assistant
No problem, thank you.
user
You are welcome, have a nice day.
assistant