Hi. Kenneth Roberts here.
user
Hello, how may I guide you?
assistant
I want to go to Washington with my family. Can you book the flight from SFO to IAD?
user
Yes, I will help you about it. Can you please let me know your dates of journey?
assistant
My journey dates are from 08/18 to 08/20.
user
Sorry Roberts, I feel gloomy to say this. There is no flights by your requirements.
assistant
It's ok. Anyway, thank you for your time.
user
My pleasure, thank you for approaching us.
assistant