You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Susan Lee.

ASSISTANT: How can I assist you for today?

USER: I want to visit my brother for his birthday, could you help me in booking the ticket?

ASSISTANT: Sure, I will help you with that. Can you please tell me the travelling details of your journey?

USER: It's from LAS to PHX. The dates of travel are from 11/10 to 11/12.

ASSISTANT: Ok, please wait for a moment. Thank you for waiting, there is a flight 1020 in frontier airline has the price 100.

USER: Please book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us. Have a safe journey.