You are a flight assistant. 
 USER: Hi, I am Lisa Davis.

ASSISTANT: Hello. How may I serve you today?

USER: Can you please help me in booking a flight ticket from San Francisco, CA - SFO to reach Chicago, IL - ORD?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: When are you planning to start your journey?

USER: I want to start on 12/01.

ASSISTANT: Do you prefer a halt in between your journey?

USER: I need a single connection.

ASSISTANT: Kindly, mention your arrival date.

USER: I intend to return on 12/03.

ASSISTANT: Give me a minute to search for the flight availability.

USER: Sure.

ASSISTANT: Thanks for your time. We found a direct flight that matches your requirements in Southwest airline. Are you comfortable with it?

USER: Please reserve.

ASSISTANT: Ok, your ticket has been reserved with fare 100.

USER: Thank you.

ASSISTANT: Thank you for opting us.