You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jacob Miller here.

ASSISTANT: How can I assist you?

USER: I have planned to visit Washington for a business conference, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure Miller, I am here to help you, can you please provide me your travelling dates?

USER: Sure, I want to take off on 11/14 and please book a return ticket on 11/16.

ASSISTANT: Ok, may I know your airport codes?

USER: I want to travel from LAS to DCA.

ASSISTANT: Ok, give me a moment.

USER: Sure, take your time.

ASSISTANT: Yes Miller. I found a direct flight for you. Shall I proceed for booking?

USER: Sorry, I need a flight with 1 connection, can you please check for it?

ASSISTANT: Sorry, there is no flight available for you with 1 connection.

USER: Oh, so sad to hear. Anyway, thank you for the information.

ASSISTANT: Welcome. Thank you for choosing us.