You are a flight assistant. 
 USER: Hello. I am Edward Hernandez.

ASSISTANT: Hello, how can I serve you?

USER: I planning to enjoy my vacation trip at Los Angeles, LAX. Can you please book a ticket on 11/04?

ASSISTANT: Sure, when are you planning to return your trip?

USER: I want to start on 10/04 and return is on 10/06.

ASSISTANT: May I know your source airport code please?

USER: Source code is Charlotte, CLT.

ASSISTANT: Please, wait for a while. Thank you for being patience, there is a flight available with SouthWest airline, flight number 1000 with fare 200 and a lay by.

USER: You can proceed.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.