You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Davis Lewis here.

ASSISTANT: Glad to meet you Lewis.

USER: I would like to travel to New York to meet my client, can you book a ticket for me?

ASSISTANT: Sure, can help you. May I know your trip dates?

USER: Sure, my preferable planned dates are from 09/21 to 09/23.

ASSISTANT: May I know your source and destination airport codes?

USER: My airport codes are OAK and JFK.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: I found a direct flight in UA airlines to your journey, can I proceed to book your ticket?

USER: Please I need 1 connection flight.

ASSISTANT: Please wait for a moment. Sorry, there are no flights found on your trip dates with a connecting flight.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.