You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Joseph King. Can you please help me in booking my flight ticket from IAD to ODD?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates to proceed further?

USER: My trip dates are 08/08 and 08/10.

ASSISTANT: Can you please recheck your destination code?

USER: Ok, my destination airport code is ORD.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights in your route as per your travelling details.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.