Hi.
user
Hello. How can I aid you?
assistant
I am William Gonzalez. I want to meet my father on his birthday, can you please help me to book my flight ticket from DFW to SEA?
user
Sure, may I know your planned travel dates?
assistant
Sure, I have to depart on Dec 24th and I will return back on Dec 26th.
user
Do you have any specifications?
assistant
I prefer to depart in the evening.
user
Sorry to say, there are no flights available for your desired intent.
assistant
No problem. Anyway, thank you for checking.
user
Thank you for reaching us.
assistant