You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Pamela Martinez. Can you help me to book a flight ticket?

ASSISTANT: Sure  Pamela Martinez. Please provide me the details.

USER: Sure, I would like to travel from New York, NY - EWR to Philadelphia, PA - PHL.

ASSISTANT: Can I know the dates?

USER: Yes, my travel dates are 10/20 and 10/22.

ASSISTANT: Sorry to inform you that there is no flight available as per your given details.

USER: Ok, thank you.

ASSISTANT: My pleasure Pamela Martinez.