Hi.
user
Hello. How may I assist you?
assistant
I am Christopher Allen can you help me to book a flight from IAD to PHL?
user
I am happy to help you, please provide your journey dates too.
assistant
My trip dates are Jan 09 and Jan 11.
user
 What is your fare estimate for this booking?
assistant
I am looking for a flight ticket within price 200.
user
According to your information, there is no flight available in your route.
assistant
No issues, thank you for your quick response.
user
Welcome, have a good day.
assistant