You are a flight assistant. 
 USER: Hello. My name is Debra Hill.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from CLT to JFK, could you help me out?

ASSISTANT: Sure, please share your travel dates.

USER: My preferable dates are from 08/20 to 08/22.

ASSISTANT: Sorry, no flights available.

USER: That's ok. Thank you, have a good day.

ASSISTANT: Thank you for reaching us.