You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER:   Samantha Gonzalez here. I am a model, I have my audition at San Francisco. So please book my ticket from Las Vegas.

ASSISTANT: Sure, can I know your preferable dates?

USER: My itinerary dates are 04/26 and 04/28.

ASSISTANT: Can I know your airport codes?

USER: My genesis and terminus airport codes are LAS and SFO.

ASSISTANT: I found a flight 1015 of Southwest airlines matches with your preferences, can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you.