You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are expecting from my side right now?

USER: I am Joseph Perez. I need to reserve my flight ticket to Atlanta to attend a seminar over there. Can you please assist me to book a flight ticket from my current city San Francisco?

ASSISTANT: Sure, I will definitely help you in flight ticket booking.

USER: Thank you for considering my request about my flight ticket booking.

ASSISTANT: Can you please let me know the travelling dates that you have planned for your journey to find a flight?

USER: Sure, I have planned my journey on 08/28 and need to get a return flight to my hometown on 08/30.

ASSISTANT: Ok, Can you please let me know the regional airport codes of source and destination the you are planning to move?

USER: Sure, my source airport code is SFO and my destination airport code is ATL.

ASSISTANT: Ok, please give me some time to check the flight on your details.

USER: Ok, have your time and please provide a suitable flight for my journey.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: I am sorry to say that, there is no flight for you to reserve a seat to reach your destination due to the sold out of tickets.

USER: That's fine, I will go with any another resources to reach out my destination. Anyway thank you for the information.

ASSISTANT: Ok, thank you for utilising our service and hope that we will serve you the better for next time.

USER: Ok, you are most welcome.