You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kathleen Young here.

ASSISTANT: How may I help you, Young?

USER: Reserve a flight ticket for me that is from ORD to LAS.

ASSISTANT: Sure, may I know your journey dates please?

USER: My travel dates are 05/31 to 06/02.

ASSISTANT: Please give me a minute. Young, I found a flight with Southwest airlines available with price 100. Shall I book the ticket?

USER: Yes, you can book this flight ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1017.

USER: Thank you.

ASSISTANT: Thank you for choosing us.