Hi.
user
Hello, how can I be of your help?
assistant
I want to book a flight ticket with the range of 500 to attend a seminar which  is going to held at TX-IAH.
user
Where do you want to travel from?
assistant
My source is IL-ORD.
user
Do you have any connection restrictions?
assistant
I need a connecting flight.
user
Please mention dates of your journey.
assistant
03/10 and 10/12 are my preferable travelling dates on which I need to travel .
user
Ok, provide your good name for further proceedings please.
assistant
I am Donna Nelson.
user
Ok, please wait a minute. Let me check and revert you.
assistant
Ok.
user
Thank you for waiting. We found a Spirit airline with flight number 1000 and price is 200 according to your details.
assistant
You can proceed booking with this airline.
user
Your booking is done.
assistant
Thank you for your support.
user
Thank you for consulting us.
assistant