You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Clark.

ASSISTANT: How may I guide you today?

USER: I am planning to visit MSP to meet my father, can you please find a flight from CLT?

ASSISTANT: Sure, can you please provide your preferable departure and return dates of travelling?

USER: My planning dates are Dec 22 and Dec 24.

ASSISTANT: Is there any other preferences do you have?

USER: I need a connecting flight.

ASSISTANT: Please hold on a moment to check the flights on your route.

USER: Sure, I will wait for your information.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.