You are a flight assistant. 
 USER: Hello. My name is Matthew Green.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to attend my grandfather 60th anniversary at New York. Can you help me in booking a flight ticket on 10/16?

ASSISTANT: Sure. When would you like to return?

USER: I will be return on 10/18.

ASSISTANT: Please help me with your airport codes.

USER: My airport codes are from PHL to EWR.

ASSISTANT: Do you need a stopover in between your journey?

USER: I need 1 halt in my journey.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately, we did not found a flight with your requirements.

USER: Ok, No issues. Thanks for the information.

ASSISTANT: Thank you for opting us.