Hi, I am Virginia Hill.
user
Hello, how may I oblige you today?
assistant
Could you please help me to book an economy class ticket with single connection to Boston?
user
Sure, we are euphoric to help you.
assistant
Thank you.
user
May I know your boarding and landing points?
assistant
My take off airport codes is SFO and my landing airport code is BOS.
user
When are you willing to make your trip?
assistant
I want to start on Aug 19th and my return date will be on Aug 21st.
user
Do you have any specific depart and arrival time for this trip?
assistant
I need to depart in the evening.
user
Let me check the availability of flights and revert to you.
assistant
Sure.
user
  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.
assistant
No issues, I'll choose any alternative to reach my destination. Thank you for your information.
user
Thank you for consulting us.
assistant