You are a flight assistant. 
 USER: Hello, Jennifer Wilson here.

ASSISTANT: Hello, how may I assist you today?

USER: I planned to attend for an interview in DEN, can you please help me to book a flight ticket from IAD?

ASSISTANT: Jennifer Wilson, may I know your planned dates for this journey please?

USER: I would like to travel on 05/07 and  05/09.

ASSISTANT: Please wait for a while, till I check available flights on route for you.

USER: Sure.

ASSISTANT: There is a direct flight by Frontier airlines at the price of 100, Shall I book it?

USER: No, please don't book it. I want a 1 connecting flight.

ASSISTANT: Ok, let me check a flight with 1 connection for you.

USER: Ok.

ASSISTANT: Sorry Jennifer Wilson, no flights for you with single connection.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching our services, have a great day.

USER: Thank you for your information.