Hello. I am Ronald Lopez.
user
Hello,how may I abet you today?
assistant
I am  planning to celebrate my brother's birthday at Houston, can you please help me in booking?
user
Sure, when are you planning to travel?
assistant
I will start on 12/20 and return on 12/22.
user
Please share you source and destination airport codes?
assistant
My take off airport code is New York, LGA and landing airport code is Houston, IAH.
user
Do you need any halt in between the journey?
assistant
Yes, I need a halt.
user
Thank you for your details, I regret that there are no flights available with the given information. Thank you.
assistant
Ok, no problem. Thank you.
user