You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you for the day?

USER: Please help me out in booking the ticket from DCA to IAD.

ASSISTANT: Sure, can you please share your journey dates?

USER: My trip dates will be Jan 15 to Jan 17.

ASSISTANT: May I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Please let me know your name.

USER: Michael Collins is my name.

ASSISTANT: Are there any more specifications in your journey?

USER: No.

ASSISTANT: Sorry we did not find any flights matching your credentials.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.