You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Ronald Williams.

ASSISTANT: How can I assist you?

USER: I want to go for a holiday trip to Las Vegas to see the city overview, can you please book me a connecting flight?

ASSISTANT: Sure, help me with your travel dates please?

USER: 01/19 and 01/21 are my preferable dates to travel.

ASSISTANT: May I know your source and destination airport codes?

USER: I want to take off from PHL and land at LAS.

ASSISTANT: Thanks for your details, there is a connecting flight from Spirit airline of fare 100 and flight number 1029. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for aiding me.

ASSISTANT: Thanks for availing us.