You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER:  I want to visit San Francisco, could you help me in booking my ticket?

ASSISTANT: Sure, I will help you. Could you please provide your nearest airport codes for booking?

USER: I have planned to move from LGA to SFO.

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: My preferred dates of travelling are from 12/20 to 12/22.

ASSISTANT: Ok, please hold on a moment to check the flights availability.

USER: Sure.

ASSISTANT: Based on your information, flight number 1017 from Delta airlines with 1 connection with the fare of 100 is available for you. Shall I proceed with this?

USER: Yes, proceed and confirm my reservation.

ASSISTANT: Ok, your reservation is done successfully.

USER: Thank you for helping me out.

ASSISTANT: Thank you approaching. May I know your name?

USER: Myself Raymond Hill.