You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Can you please help me in booking a flight ticket from IAD to DTW?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, my travel dates are from Mar 08 to Mar 10.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Let me know your airline preference.

USER: I would prefer normal-cost airlines.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Let me know your name please.

USER: Anthony Allen here.

ASSISTANT: Sorry, there are no flights available as per our records.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: My pleasure.