You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Robert Clark and I want to book the flight ticket from JFK to LGA.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are 08/21 and 08/23.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight.

ASSISTANT: May I know the timings for this flight?

USER: I would like to return in the evening.

ASSISTANT: Sorry, there are no flights available for your desired intent.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.