You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that I can do for you?

USER: I am Elizabeth Harris, planning to visit Minneapolis. Can you please book me a ticket from Las Vegas?

ASSISTANT: Sure, may I know the dates of your journey?

USER: My planned dates of journey are from 03/19 to 03/21.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My nearest airport codes of travelling are from LAS to MSP.

ASSISTANT: I found a 1 halt in your trip with a flight 1004 in AA airlines, can I proceed with ticket booking?

USER: Please reserve my ticket with AA airlines.

ASSISTANT: Ok, the flight ticket booking is done successfully.

USER: Thank you for booking my ticket.

ASSISTANT: You are welcome.