You are a flight assistant. 
 USER: Hello, I am Edward Evans.

ASSISTANT: Hello, Edward. Which service are you looking for today?

USER: I want to visit Independence Hall at PHL, Can you please book a ticket from PHL?

ASSISTANT: Sure, we can help you. On which dates are you planning to travel?

USER: My depart is on 06/27 and return is on 06/29.

ASSISTANT: Do you have any other specifications?

USER: I need connecting flight. Price 200.

ASSISTANT: Sorry for the inconvenience, there is no flight found on your requested dates.

USER: Ok. Thank you.

ASSISTANT: Welcome. Thank you for contacting us, have a great day!.