You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Paul Wright. Can you please book a flight ticket from LGA to PHL?

ASSISTANT: Ok, please tell me your preferable travelling dates.

USER: Sure, I need to travel on dates of 07/19 and 07/21.

ASSISTANT: There is a plane with 2 connections, is it ok for you?

USER: No, I need connection 0 so please recheck with that.

ASSISTANT: Sorry, there is no plane with 0 connections.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: My pleasure, have a great day.