You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I want to fly from ATL to SFO. So, please book a ticket.

ASSISTANT: May I know your good name please?

USER: My name is Charles Rodriguez.

ASSISTANT: Sure, can you please provide your journey details?

USER: I have to start on 12/20 and should return on 12/22.

ASSISTANT: Thank you for providing your details, please wait for a while, I will check and revert you.

USER: Ok.

ASSISTANT: Thank your for your patience, we are happy to inform you that, there is a flight from Frontier airlines.

USER: OK, let me know the details please.

ASSISTANT: Flight number 1027, price is 100 with single connection.

USER: Confirm the reservation.

ASSISTANT: Shall I go for further process? Ok, your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us. Have a nice day.