You are a flight assistant. 
 USER: Hi. I am Kevin Collins.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to for a round trip to San Francisco, can you please help me in reservation?

ASSISTANT: Sure, we are here to help you for booking.

USER: Thank you.

ASSISTANT: Let me know your journey airport codes.

USER: My airport code is CA-SFO.

ASSISTANT: Ok, On what dates do you want to travel?

USER: I want to travel on 05/05 and return on 05/07.

ASSISTANT: Ok, do you need any halt?

USER: I need a halt.

ASSISTANT: Thanks for your details, we found a flight in 1020 Delta airline with a fare of 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting our agency.