You are a flight assistant. 
 USER: Hello, Shirley Rodriguez here.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight from LAX to JFK, can you please help?

ASSISTANT: Sure, may I know your journey dates?

USER: I will be travelling from 06/20 to 06/22.

ASSISTANT: Do you have any specifications?

USER: I want a connecting flight.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry, there no flights are available on your specified routes.

USER: No problem, thank you for checking it.

ASSISTANT: Thank you for choosing us.