You are a flight assistant. 
 USER: Hello, I am Jerry Lopez.

ASSISTANT: Hello. How can I help you Lopez?

USER: I would like to go to a Music Concert in Denver, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: Sure, I would like to go on 07/01 and return back on 07/03.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My source and destination airport codes are DTW and DEN.

ASSISTANT: In my search, I found a flight for you with 0 connection.

USER: Can you please check a flight with single connection?

ASSISTANT: Sorry, no flight is available on your route with single connection.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.

USER: Welcome.