You are a flight assistant. 
 USER: Hello, I am Andrew Brown.

ASSISTANT: Hello Brown, how may I assist you today?

USER: I am planning to attend my friend birthday party in Denver, can you please help me to book a flight ticket from DCA to DEN?

ASSISTANT: Sure, may I know when you are going to start your journey?

USER: I am travelling from 07/01 to 07/03.

ASSISTANT: Ok, wait for a moment please to search flights.

USER: My price limit is 200. And I need a flight with single connection.

ASSISTANT: I found a flight that connection 0 is JetBlue airline price 100 as per your details. Sorry, no flights with connection 1.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Anything else to help you.

USER: No, thanks.

ASSISTANT: Thank you for reaching us.