You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Steven Davis, need a direct flight to Las Vegas. Can you help me with reservation?

ASSISTANT: Sure, I will help you in booking a direct flight.

USER: Thank you.

ASSISTANT: Kindly mention your travelling schedule dates?

USER: Sure. I planned to have dinner at The Mirage in Las Vegas with my husband on 08/28. So, I need to travel on 08/27. I will be returning on 08/29.

ASSISTANT: Ok, may I know your airport codes?

USER: Source: San Francisco, SFO. Destination: Las Vegas, LAS.

ASSISTANT: Could you please mention your price limit?

USER: I prefer an airline ticket with a fare of 500.

ASSISTANT: There is a Frontier 1011 airline with fare of 100 which matches your travelling dates. Shall I proceed with booking?

USER: Ok, Is it a direct flight or not?

ASSISTANT: Sorry, It is a connecting flight.

USER: Do not proceed. Thank you.

ASSISTANT: Thank you for approaching us.