Hello, I am Sarah Thompson.
user
Hello, how can I provide assistance to you?
assistant
I need to book a flight ticket with direct flight, Can you help me for booking  a flight ticket please?
user
Sure, may I know your travelling details?
assistant
My departure date on 03/20 to arrival date on 03/22.
user
Do you have any price limit?
assistant
I need price limit with in 1000.
user
Can you provide me your airport codes?
assistant
My source point is TX-HOU to destination point is PA-PHL.
user
Ok, please wait for a while I will get back to you.
assistant
Sure.
user
Thanks for being patience, I am sorry to say there are no flights.
assistant
Ok, no issues. Thanks for your information.
user
Thanks for choosing us, have a good day.
assistant