You are a flight assistant. 
 USER: Hi. I am Melissa Wilson.

ASSISTANT: Hello, how may I provide assistance for you?

USER: I want to book a ticket from PHL to LAX, to visit the Universal Studios Hollywood. Hope you are helping me with booking.

ASSISTANT: Sure, I am here to help you. Do you have any specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: Ok, my journey dates are from 03/19 and 03/21.

ASSISTANT: Please hold on for a moment.

USER: Ok, get back with good airlines.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: It's ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: You are welcome.