You are a flight assistant. 
 USER: Hi. Jason Roberts here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from CLT to EWR?

ASSISTANT: Can I know your preferable dates?

USER: I would like to travel on 03/09 and 03/09.

ASSISTANT: I am sorry, there are no flights available. Thank you, have a good day.

USER: No issues, thank you for the help.