You are a flight assistant. 
 USER: Hello.

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

USER: Can you guide me in booking my flight ticket from DCA to IAD?

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

USER: My trip dates will be Apr 1st to Apr 3rd.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Catherine White.

ASSISTANT: Are there any more specifications in your journey?

USER: No, thank you.

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

USER: Its ok, I will go with other alternative. Thank you.

ASSISTANT: Thank you for opting us.