You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Samantha Johnson. Could you help me in booking a flight ticket from ORD to IAD?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: I will start on Apr 13, return on Apr 15.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.