You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Collins here.

ASSISTANT: Justin, how can I assist you?

USER: I am booking for a flight from ATL to JFK, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My travel dates are from 04/10 till 04/12.

ASSISTANT: Please wait for a while.

USER: Ensure that my connection should be 1.

ASSISTANT: Sorry, no flight is available.

USER: It's ok, thank you for checking.

ASSISTANT: Thank you for contacting us.