You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Korean war veterans memorial which is famous in Washington, IAD.

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Thank you. My travelling dates are Sept 06 and 08.

ASSISTANT: Ok, may I know your source airport code?

USER: My source is from Dallas & Fort Worth, DFW.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a flight without any break.

ASSISTANT: Ok, may I know your name?

USER: Sure, Sharon Phillips here.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, thank you.

ASSISTANT: Welcome. Have a nice day.