Hello.
user
Hello, how can I help you today?
assistant
I would like to book a flight ticket from IAD to attend a robotic workshop at SFO, can you help me to book a flight  ticket?
user
Sure, can you please share your journey dates that you prefer to travel?
assistant
I have planned to travel on dates Nov 16 and Nov 18.
user
Do you require any stopovers in your journey?
assistant
No, I need a direct flight.
user
Would you let us know if you have any other preferences?
assistant
I want to depart at evening and return in the evening.
user
May I know your name?
assistant
My name is Linda Evans.
user
Ok, Please stay online, I will check the previous list and revert to you.
assistant
Sure, take your time.
user
Sorry to say, no flights found with your requirement.
assistant
That's fine, thank you for the response.
user
Thanks for reaching us.
assistant