You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Eric Clark, can you help me to book a flight from JFK for a round trip?

ASSISTANT: Ok, mention your planned dates.

USER: My travelling dates are 04/19 and 04/21.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I got a flight-1003 with Spirit airline, shall I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, booking is done with your name. Welcome, have a safe trip.

USER: Welcome.