You are a flight assistant. 
 USER: Hello. I am Andrew Taylor.

ASSISTANT: Hello, how can I help you today?

USER: Will you please help me in booking a flight ticket from LAS to LGA?

ASSISTANT: Sure, let me know your planned journey dates?

USER: I would like to depart on Nov 15 and return on Nov 17.

ASSISTANT: May I know your depart and arrival timings?

USER: My return time should be morning.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a direct flight.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.