You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please book me a flight ticket from IAD to SEA?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from Mar 6th to Mar 8th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want a single connection in between my journey.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Dorothy Edwards.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you.