You are a flight assistant. 
 USER: Hi, Rebecca Turner is my name.

ASSISTANT: Hello, how best I can aid you today?

USER: I am willing to travel to Charlotte from DEN to meet my friend, so please help me in booking a flight.

ASSISTANT: Sure, let me know your preferred journey dates.

USER: My journey dates are on Oct 25th to 27th.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any restrictions on your depart and arrival timings?

USER: My depart is in evening time.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Thanks for your details, please standby.

USER: Sure.

ASSISTANT: I apologise to say this, there are no flights which can travels to your region as per your requirements.

USER: No worries, thank you.

ASSISTANT: Thank you for availing us.