You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Margaret Edwards here. Please help me out in booking the ticket from LAS to JFK.

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My trip dates will be Jan 2 to Jan 4.

ASSISTANT: Do you have any preferences?

USER: My return time must be evening with 1 connection.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you.