You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Davis here.

ASSISTANT: How can I aid you?

USER: I am planning to attend a conference in Detroit, can you please help me booking a flight ticket from DTW to DTW?

ASSISTANT: May I know your journey dates please?

USER: I will start my journey on 09/22 and return will be on 09/23.

ASSISTANT: Wait for a while please.

USER: Ok, there is a correction in my depart date and it is 09/21.

ASSISTANT: Sure, I will the availability. Southwest airlines is available on your trip with the ticket fare of 200, shall I proceed with that booking?

USER: Ok, proceed booking with that flight.

ASSISTANT: Your ticket has been booked with the flight-1005.

USER: Ok, thank you for helping me.

ASSISTANT: Thank you for reaching us.