Hi.
user
Hello. How may I help you?
assistant
I want to book a ticket from LGA to IAD, can you help me?
user
Sure, can you tell me about your travelling dates?
assistant
My travel dates are 04/27 and 04/29.
user
May I know your name?
assistant
Myself Mary Gonzalez.
user
Sorry for the inconvenience, there is no flight for you on your preferable locations.
assistant
No problem, thanks for checking.
user
Welcome.
assistant