You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Edward Hernandez here.

ASSISTANT: How may I assist you?

USER:  I want to book a ticket from DTW to CLT, please look for any airlines providing service in this route.

ASSISTANT: Sure, can I know your travel dates?

USER: From 06/23 to 06/25.

ASSISTANT: The flight 1012 of Southwest airlines is available on your requested dates. Shall I book the ticket?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.