You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello flight booking agency here, what help can I do for you?

USER: I want to visit Napa Valley in San Francisco, can you help me in booking a flight ticket?

ASSISTANT: Yes, I am here in helping, can I know you source and destination codes?

USER: I want to fly from MCO to SFO.

ASSISTANT: What are your planning dates to travel?

USER: My planned dates are 04/19 and 04/21.

ASSISTANT: Can I know the name for reserving the ticket?

USER: Nicholas Green here.

ASSISTANT: Green, I found a flight based on your request with 1003 flight in Frontier airlines, shall I confirm your ticket?

USER: If price limit 200, you can book it.

ASSISTANT: Yes, the ticket is confirmed and you get the plane details to your number by the end of day. Happy journey Green.

USER: Thank you for booking.

ASSISTANT: Our pleasure to help you.