You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to travel from IAD to DEN, can you help me?

ASSISTANT: Sure, may I know your preferred dates to reserve your seat?

USER: My travel dates are 03/15 and 03/17.

ASSISTANT: Do you need any connections between your trip?

USER: I need a single connection.

ASSISTANT: May I know your name to proceed further?

USER: I am Nicholas Evans.

ASSISTANT: Do you need any other requirements?

USER: No.

ASSISTANT: We regret to inform you that there is no flights going on your way.

USER: That's ok. Thank you.

ASSISTANT: Thank you for contacting us.