You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Hall.

ASSISTANT: How may I help you?

USER: I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from LAS?

ASSISTANT: Ok, now please share your travel dates?

USER: Sure, I would like to take off on 04/05 and return back on 04/07.

ASSISTANT: There is only zero connection flight available.

USER: Ok, no problem. Please proceed with the booking.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1001.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you.

USER: You are welcome.