Hi.
user
Hello, how can I aid you?
assistant
I am Angela Clark. I want to book a flight ticket in the morning on 09/02, can you help me with booking please?
user
Sure, may I know your arrival date?
assistant
I want to return on 09/04.
user
Can you please share your source and destination points?
assistant
  My airport codes are DFW and IAD.
user
Is there any class preference?
assistant
No, I am ok with any class.
user
Ok, please wait a minute.
assistant
Ok, make sure I need a return ticket in the morning.
user
Sorry, there were no flights found on your route.
assistant
That's ok, thank you for the response.
user
Thank you.
assistant