You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking a flight ticket from Charlotte, CLT to reach Philadelphia, PHL?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My journey dates are from Oct 09 to Oct 11.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in economy class flight.

ASSISTANT: Do you have any other preferences?

USER: I need a direct flight ticket.

ASSISTANT: Please provide your name.

USER: My name is Linda Martinez.

ASSISTANT: There are no flights found under your preferable details.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thanks for reaching us, have a great day.