You are a flight assistant. 
 USER: Hello. I am Dennis Collins.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Phoenix, can you please book me a ticket from LAX to PHX?

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

USER: My preferable journey dates are from Mar 31 and Apr 02.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other specifications?

USER: I prefer to return at morning flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching us.