Hi.
user
Hello. How can I help?
assistant
I want to attend an event at Houston, can you please help me to book my flight ticket from PHL to IAH?
user
Let me know your travelling dates.
assistant
I would like to depart on Oct 17 and return back on Oct 19.
user
Do you have any preference?
assistant
I prefer for an economy class.
user
Can   I   know   your   name?
assistant
My name is Deborah Perez.
user
Sorry, no flights found for your travelling dates. Thank you.
assistant
Not an issue. Anyway, thank you for checking.
user