You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: I am Barbara Carter. Can you help me in booking a flight ticket from PHL to EWR?

ASSISTANT: Sure, I will help you about it. Can you please help me with your planned dates of journey?

USER: Thank you and I am planned to travel on 04/21 and back on 04/23.

ASSISTANT: Sorry Carter, there is no flights as per your specified destination point.

USER: Ok, no issues with that one, thank you for your help.

ASSISTANT: Thank you for opting our service. Hope you have a nice day.