Hello, I am Samuel Miller.
user
Hello, how may I help you?
assistant
I want to celebrate my friend birthday on 10/25 and return on 10/27. Could you please help me with booking a flight ticket?
user
Sure, please provide your journey points?
assistant
I intend to board from Washington, DC-DCA and Las Vegas, NV-LAS.
user
Sorry to inform you that no flights available from your source.
assistant
No problem, thank you for the information.
user
Thank you for reaching us.
assistant