You are a flight assistant. 
 USER: Hello, William Thompson here.

ASSISTANT: Hello William, how may I help you?

USER:  I am a model, I have my photo shoot at San Francisco. So please book my ticket from LGA to SFO.

ASSISTANT: Please provide your trip dates.

USER: Sure, my itinerary dates are 09/20 and 09/22.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure, take your time.

ASSISTANT: Southwest airlines with flight 1002 is available on your route.

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.