You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to travel San Francisco next week, can you please book a direct flight for me?

ASSISTANT: I am happy to help you with that.

USER: Thanks.

ASSISTANT: Can you please share your journey dates?

USER: I would like to take off on 12/21 and please book my return ticket also on 12/23.

ASSISTANT: May I know your airport codes to proceed further?

USER: I want to fly from CLT and destination airport is SFO.

ASSISTANT: May I know your name please?

USER: Sure, my name is William Miller.

ASSISTANT: I found a ticket for you with price 100, flight number is 1001 and connection is 1. Is it ok for you?

USER: Please proceed.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.