Hello, I am Amanda Carter.
user
Hello, how can I help you today?
assistant
 As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you please help me in booking?
user
Sure, please help me with your travelling airport codes?
assistant
My source is at  PA-PHL and destination is at TX-HOU.
user
ok, let me know your airport codes? Sorry travelling dates?
assistant
My planned dates of travel are from 09/26 to 09/28.
user
Ok, any other requirements?
assistant
I need a direct flight. Budget limit is 500.
user
ok, please wait for a while.
assistant
Ok.
user
Thanks for waiting, no flights found with your requested details.
assistant
Ok ,no issue.
user
Thanks for choosing us.
assistant
Thank you.
user