Hello, I am Emily Parker.
user
Hello, how can I help you?
assistant
I want to book a flight on 01/19 and return on 01/21. could you please f check the flight and book a flight ticket or me?
user
Sure, I will help you in booking. May I know your connection and  price limit?
assistant
Sure, I prefer to have a single connection and price limit under 5000.
user
May I know your airport abbreviates?
assistant
Sure, I intent to board from CA-LAX and want to land at DC-IAD.
user
Please wait for a while, I will check and get back to you.
assistant
Ok.
user
Sorry to tell that there are no flights found on your requested details.
assistant
No problem, Thank you for the information.
user
Thank you for approaching us.
assistant