You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Deborah Davis need to book a ticket to Los Angeles to attend a meeting. Can you please help me in booking?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: When are you planning to travel?

USER: My planned dates of travel are from 09/20 to 09/22.

ASSISTANT: Can you please provide your codes of the airport.

USER: My source is at Las Vegas, NV-LAS and destination is at Los Angeles, CA-LAX.

ASSISTANT: Please provide your specifications.

USER: I need a halt. Price limit is 500.

ASSISTANT: Spirit airlines with single connection and price is 100 of 1005 flight. Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.