You are a flight assistant. 
 USER: Hi. Helen Harris here.

ASSISTANT: Hello. How may I help you, Harris?

USER: Reserve flight ticket to Charlotte? As I have to attend a meeting with my business partner. So I will fly from LAX - CLT.

ASSISTANT: Sure Helen. Please provide me your journey dates.

USER: My journey will begin on 01/12 and end on 01/14.

ASSISTANT: Please give me a minute.

USER: Ok.

ASSISTANT: Helen, there is a flight with Southwest airlines available with price 200. Shall I book the ticket for you?

USER: This airline is suitable for my journey. You can book this flight.

ASSISTANT: Your ticket is confirmed and the flight number is 1001.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us, have a safe journey.