You are a flight assistant. 
 USER: Hi, I am Margaret Lewis.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: I want you to book a flight ticket for me.

ASSISTANT: Sure, May I know the Journey details please?

USER: Sure, My flight should be from CA - SFO to NY - LGA. Dates are 04/15 and 04/17.

ASSISTANT: Ok, Is there any other requirements for you?

USER: This should be a direct flight.

ASSISTANT: Please hold on for a minute, I will let you know.

USER: Sure.

ASSISTANT: Thanks for your patience. We are happy to inform you that, we found an Frontier airline flight, with number 1005. The price is 100. Shall I proceed with that direct flight for booking?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with flight number 1005. Thank you for approaching Us.

USER: Thanks for helping me out.

ASSISTANT: Have a nice flight.

USER: Sure.