You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Sarah Garcia. I want to book a ticket from IAH to LGA.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am starting on 04/20 and return back on 04/22.

ASSISTANT: I found a flight 1014 of AA airlines which has 1 connections, shall I proceed?

USER: Please proceed if there is a direct flight.

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you, have a good day.