You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello. How may I help you?

USER: I want attend an interview at Denver, DEN. Can you help me in booking from San Francisco, SFO?

ASSISTANT: Sure, I will help you. Do you need a lay by in between your journey?

USER: I need a halt in my journey.

ASSISTANT: On which dates, you are planning to leave and return?

USER: My planned dates are from 04/21 to 04/23.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight available with fare 300 in economy class having single connection.

USER: Ok, Proceed to book.

ASSISTANT: Your reservation has been confirmed with flight number 1015 of Southwest airline.

USER: Thank you.

ASSISTANT: Thank you for choosing us.