You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Mary Perez.

ASSISTANT: How may I guide you today?

USER: I have a business meeting in New York. Can you help me for booking a flight ticket from CLT to EWR?

ASSISTANT: Sure, I am gleeful to help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: My travelling dates are May 10 and May 12.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight.

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

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that there are no flights moving to your region within your planned dates of travelling.

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

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

USER: Welcome.