Hello.
user
Hello, how may I help you?
assistant
I am Ryan Parker, can you help me to book a flight from LGA to IAD?
user
Sure, may I know your trip dates please?
assistant
My travelling dates 11/06 and 11/08.
user
Do you have any other requirements?
assistant
I want to return at afternoon.
user
Sorry, we regret to inform you that there is no flight available as per your request.
assistant
No issues, thank you for your time.
user
My pleasure.
assistant