You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brandon Martinez.

ASSISTANT: How may I help you?

USER: Can you help me in booking from LAS to DCA, as there is a family function at Washington?

ASSISTANT: Yes, I feel happy to help you with that. Could you please help me by providing the travel dates?

USER: My trip dates are 02/22 to 02/24.

ASSISTANT: Ok, can you please give me a minute to search a flight for you?

USER: Sure.

ASSISTANT: There is a flight available in this route which is having a connection limit 2 and the ticket cost is 100 in the UA airlines. Can I book your ticket with the flight?

USER: I need a  flight with 1 connection.

ASSISTANT: Sorry to inform you, there are no flight tickets available in the single connecting flights due to some busy days.

USER: No issue, thank you.

ASSISTANT: You are most welcome. Thank you for choosing us and hope you will reach us in future.