You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: Carolyn Collins here. I would like to book a ticket from PHL to LGA, could you please book a flight for me?

ASSISTANT: Yes, is there any preferable dates for you to travel?

USER: I am planning to go on 03/16 and return on 03/18.

ASSISTANT: There is a flight 1007 available with 0 connection at price 100. May I confirm your ticket with UA airlines?

USER: I need single connection flight.

ASSISTANT: Sorry, there are no flights available with 1 connection.

USER: It's ok, no problem. Thanks for your help.

ASSISTANT: Thank you, have a great day.

USER: Most welcome.