You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Please book a ticket from SFO to LGA to meet my sister.

ASSISTANT: Sure, I am here to help you out with that. May I know on which dates you are willing to travel?

USER: My travelling dates are July 21 and July 23.

ASSISTANT: Do you need any flag stop in between journey?

USER: I would like to fly in single flag stop.

ASSISTANT: May I know your good name please?

USER: I am David King.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Ok.

ASSISTANT: Thank you for your time, we have found a Southwest airline, flight number-1001, connections-1 and ticket-100. Would you like me to book the ticket?

USER: Ok, please proceed.

ASSISTANT: Sure, a seat has been reserved successfully for a economy class flight.

USER: Thank you.

ASSISTANT: Thank you for your presence. We hope to serve you again.