Hello,.
user
Hello, may I know your good name please?
assistant
Richard Lee is my name.
user
May I know what kind of service you are expecting from us?
assistant
My kid is performing in dance in Providence Children's Film Festival in Las Vegas, So I would  like to attend the event.
user
Sure, I am gleeful to help you. Please share me your travelling dates?
assistant
My journey dates on 05/10 and 05/12.
user
May I know your airport codes?
assistant
My airport codes are Chicago, ORD to Las Vegas, LAS.
user
Do you have any other limitations?
assistant
Yes, I can spend only 500 for airfare.
user
Ok, please wait for a second.
assistant
Sure.
user
Thanks for waiting, I apologise that there are no flights found with your specifications.
assistant
Ok, no problem. Thank you.
user
Thanks for staying with us, have a good day.
assistant