You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to attend a pioneer festival at Charlotte. Can you help me to book a ticket?

ASSISTANT: Sure, can you share your travel dates?

USER: I want to travel on June 20 and return back on June 22.

ASSISTANT: Can you mention your specific airport codes?

USER: My source is PHL and destination is CLT.

ASSISTANT: Can I know your connection limit?

USER: I need a direct flight in between my journey.

ASSISTANT: Can I have your name please?

USER: My name is Carolyn Martinez.

ASSISTANT: Can I know your other requirements if you have?

USER: I don't have any other preferences.

ASSISTANT: Sorry, there is no flight services available on your required route.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for contacting us.