You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you.

USER: I am Barbara Walker, can you help me to book a flight from PHL to CLT?

ASSISTANT: Yes, I will help you with that. Ok, may I know your travel dates?

USER: My travelling dates are 05/26 and 05/28.

ASSISTANT: Sorry, there are no flight available for your trip.

USER: Ok, no issues.

ASSISTANT: Thank you for connecting with our agency.

USER: Thank you for your information.