Hello,.
user
Hello, how can I help you today?
assistant
I am Samuel Miller. I am excited to go Haunted Pub tour at Washington, can you help me with booking a flight?
user
Sure, please share your planned trip dates?
assistant
I want to travel on 05/14, and need to catch return flight on 05/16.
user
Ok, let me know your boarding and landing airport codes?
assistant
 I need to leave from my nearest airport LAS to reach DCA.
user
Ok, no flights found with your requested details.
assistant
Ok, no issues. Thanks for the information.
user
Thank you for reaching us.
assistant