You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want a single connecting flight to meet my grand father in Oakland OAK. Can you find a flight ticket for me?

ASSISTANT: Sure, I can help you with that.  May I know your source code, please?

USER: Thank you. My source code is from SFO.

ASSISTANT: Would you like to prefer a economy class or business?

USER: No, I don't have any class preference.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can you please share your planned travel dates?

USER: Ok, my planned trip dates are on June 19 and return on June 21.

ASSISTANT: The economy class with flight number 1000 of United  Airline is available having fare as 200 and connection as 1, is it ok for you?

USER: Please book the ticket on the name of Ruth Robinson.

ASSISTANT: Your booking has been confirmed successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have  a safe journey.