You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Perez, want to travel from LGA to PHL. Please help me in booking my ticket.

ASSISTANT: How may I assist you at this moment Perez?

USER: I want to book a ticket from your agency.

ASSISTANT: Sure, I am oblige to help you with that.

USER: Thanks.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: Sure, my travelling dates are from 04/22 to 04/24.

ASSISTANT: Please wait a moment to check the flights in your route.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights found in your route with your planned dates of travelling.

USER: It's ok, thank you.

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