You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to fly from ORD to IAD. Can you book a ticket from that route?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned travel dates are 07/15 and 07/17.

ASSISTANT: Do you have any connection limit?

USER: I want a flight with single connection.

ASSISTANT: Any other requirements to be met?

USER: Sorry, I want direct flight only, no more other requirements please.

ASSISTANT: May I know your good name?

USER: Sure,Shirley Carter here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No issues, thank you for reaching us.

ASSISTANT: Thank you for reaching us.