You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight from IAD to DEN, can you help me in booking?

ASSISTANT: Your travelling dates please?

USER: Sure, my planned travel dates are June 13 and June 15.

ASSISTANT: Do you have any specifications?

USER: Please look for a connecting flight.

ASSISTANT: Any thing else?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself Emma Edwards.

ASSISTANT: I am sorry no flights found on your route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.