You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank White here.

ASSISTANT: How may I assist you at this moment?

USER: I want to travel from CLT to ORD, can you help me in doing that?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My journey dates are Nov 12 to 14.

ASSISTANT: Do you have any particular timings in your departure and return days?

USER: My departure time is evening.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please be on hold to check the flights.

USER: Sure, take your time.

ASSISTANT: We regret to inform you that, there are no flights moving towards to your region with your preferable specifications.

USER: Ok, no issues. Thank you for the service.

ASSISTANT: Thank you for contacting us. Hope you have a great day.