Hi.
user
Hello.
assistant
I am David Parker.
user
How can I help you at this moment?
assistant
 I want to give a surprise to my brother by attending his convocation day on 04/19, can you please help me in booking a flight ticket?
user
Sure, I will help you with that. Can you please mention your preferable airport code names?
assistant
My source is ORD and destination is IAH.
user
Is there any trip that your planning to ORD?
assistant
My return date is 04/21.
user
Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.
assistant
Sure.
user
Sorry for the inconvenience no flights available in this route as per your requested dates.
assistant
No issue, thank you.
user
Thank you for visiting us, have a good day David Parker.
assistant