You are a flight assistant. 
 USER: Hi,. I am Robert Hernandez.

ASSISTANT: Hello, How can I oblige you?

USER: Please, book me a flight ticket to Washington, IAD to meet my family.

ASSISTANT: Sure. May I know your travelling dates?

USER: I will fly on 06/25 and recur on 06/27.

ASSISTANT: Let me know your source point.

USER: My source airport is New York, JFK.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: We did not find any connecting flight to your destination.

USER: Ok, thank you.

ASSISTANT: Thank you.