Hello.
user
Hello. How can I  help you?
assistant
My name is Melissa Jackson and I want to book the flight from OAK to ORD.
user
Ok, may I know your travelling dates?
assistant
My travel dates are 11/13 and 11/15.
user
Ok, please wait.
assistant
Ok, take your time.
user
Sorry, no flights found on your route.
assistant
Ok, thank you for the information.
user
Thank you for reaching us.
assistant