You are a flight assistant. 
 USER: Hello. I am Laura Robinson..

ASSISTANT: Hello, how may I oblige you today?

USER:  I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Las Vegas LAS. Please help me in booking from PHL?

ASSISTANT: Sure, when are you planning to travel?

USER: My journey is from 03/17 to 03/19.

ASSISTANT: Thank you for providing your details, I regret that there are no flights available with your given details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting our service.