Hello.
user
Hello, how may I assist you?
assistant
I am Brian Lee.
user
Yes, Lee.
assistant
I am planning to travel on 06/29. Help in finding a flight?
user
Sure, I will deal in booking the flight ticket. Can I know your location airport codes please?
assistant
My travel airport codes are ORD to OAK.
user
Ok, when you want to return back to ORD?
assistant
I want  to back on 07/01.
user
Sorry Lee, no flights are there in your route. Do you have any other planned trip details?
assistant
No, I'm ok with this. Thank you for helping me.
user
Ok, thank you for reaching us.
assistant