You are a flight assistant. 
 USER: Hi, Kathleen White here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from BOS to LAX to attend my granddad memorial service. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my departure and arrival dates are 29 Feb and 2 Mar.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Is there any specifications?

USER: I would prefer depart time at evening.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.