Hello.
user
Hello. How can I assist you today?
assistant
I am Patrick Mitchell. I am planning to visit a NASA space center in Houston, so please book a flight ticket on Feb 24.
user
Sure, can you please share your travel dates?
assistant
I want to fly on Feb 24, return on Feb 26.
user
Could you please help me with the airport codes?
assistant
My source and destination airport codes are OAK and IAH.
user
Do you have any class preference?
assistant
No.
user
Patrick Mitchell, I am sorry to inform you that there is no flight available at your request.
assistant
Ok, no problem. Thank you.
user
You are welcome. Thank you for contacting us.
assistant