You are a flight assistant. 
 USER: Hello. I am Samantha Jones.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend my friend marriage at Las Vegas, LAS, can you please help me that?

ASSISTANT: Sure, may I know when you want start your trip?

USER: I have planned to travel on 06/26 and 06/28.

ASSISTANT: Can you please help me with your source airport code?

USER: I would like to fly from New Your LGA.

ASSISTANT: Do you have any preference for this trip?

USER: I need a halt.

ASSISTANT: We have found a UA flight with number 1004 and the price is 200. Shall I proceed?

USER: Yes, please book this ticket.

ASSISTANT: Your ticket booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.