You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Larry Lewis here.

ASSISTANT: How can I assist you for today?

USER: Book a ticket for me from JFK to DEN.

ASSISTANT: Larry Lewis, may I know your travelling dates for this journey?

USER: My trip dates are from 07/19 and 07/21.

ASSISTANT: Flight-1001 is available for you with 1 connection at the price of 200, can I book it for you?

USER: Please proceed.

ASSISTANT: Booking is done for you.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching our services.