You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Nicholas Davis, I need to book a flight ticket to PHL from CLT in the month of July.

ASSISTANT: Sure, I will help you out. May I know your dates please?

USER: Sure, my travelling dates are 07/12 and 07/14.

ASSISTANT: Sorry, there are no flights.

USER: Not a problem, anyway thank you for reaching out here.

ASSISTANT: Thank you for choosing us.