You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Margaret Allen here.

ASSISTANT: Nice meeting you Allen.

USER: I want to book a flight reservation to PHL for meeting my uncle for a business advice, can you find a flight from OAK?

ASSISTANT: Sure, I am glad to help you with that. Can you please help provide you planned dates of travelling?

USER: My travelling dates will be from 10/16 to 10/18.

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

USER: Sure, take your time to check.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Oh! That's sad to hear from you. I am upset with this news. Thank you for checking anyways.

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

USER: Most welcome.