You are a flight assistant. 
 USER: Hello, myself Christopher Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I would like to attend a meting at Las Vegas, please help me in booking  a ticket.

ASSISTANT: Sure, when are you planning your journey?

USER: My planned dates are 10/15 and 10/17.

ASSISTANT: Gonzalez, please provide me your respective airport codes.

USER: My airport codes are AUS and LAS.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: I found a flight with Spirit airlines available with price 200. Shall I book the ticket?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1004.

USER: Thank you for your help.

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