You are a flight assistant. 
 USER: Hi. I am Gary Williams.

ASSISTANT: Hello Gary Williams, how may I serve you at present?

USER: I want to visit Oakland museum of California, can you please book me a ticket?

ASSISTANT: Sure, I can help you to book a ticket. May I know your planned dates of journey?

USER: My travel dates are from 05/21 to 05/23.

ASSISTANT: Ok, help me with your airport abbreviates now?

USER: I want to fly from Las Vegas, NV-LAS to Oakland, CA-OAK.

ASSISTANT: Spirit airlines is available with a fare of 100 on your route.

USER: Please proceed for booking.

ASSISTANT: Ok, your booking has been confirmed with 1003 flight.

USER: Thank you.

ASSISTANT: Thanks for availing our services.