You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Stephen Thompson.

ASSISTANT: How can I aid you?

USER: We are planning to visit the Central Park in New York as my doctor prescribed me to go for a change. Would you please help me for booking?

ASSISTANT: Sure, please provide me your journey dates?

USER: I would like to depart on 11/20 and arrival on 11/22.

ASSISTANT: May I know your journey points?

USER: My journey points are from Charlotte NC-CLT to New York NC-CLT.

ASSISTANT: Sorry to inform you that no flights are available on your mentioned dates.

USER: Ok, no issue. Thank you for your service.

ASSISTANT: Thank you for availing us.