You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I need you to book a flight ticket.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: April 24 and 26 are my planned travel dates.

ASSISTANT: May I know your name to fill the reservation form?

USER: Nicole Parker here.

ASSISTANT: Can you provide me your location airport codes?

USER: DCA and LAS are the respective airport codes.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a break in my journey.

ASSISTANT: Sorry Nicole, there is no flight in your route.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.