You are a flight assistant. 
 USER: Hi, Nicole Taylor here.

ASSISTANT: Hello, how can I help you?

USER: I will be attending my family doctor for a health checkup to Charlotte, can you help me?

ASSISTANT: Sure, do you want connecting flight?

USER: Yes, I will prefer a single connecting flight.

ASSISTANT: Please share your planned journey dates.

USER: My preferable dates are 06/13 and 06/15.

ASSISTANT: May I know your airport codes?

USER: I will fly from DEN to CLT.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no connecting flights available with your given details.

USER: Ok, no worries. Thank you for your response.

ASSISTANT: Thank you for opting us.