You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a ticket from CLT to AUS. Will you please help me in booking a ticket?

ASSISTANT: Can you provide me the dates of the flights?

USER: My dates are 02/09 and 02/11.

ASSISTANT: Can I know your name for booking purposes?

USER: My name is Matthew Brown.

ASSISTANT: I'm sorry Matthew, there are no flights available with your dates.

USER: It's OK. Thank you.

ASSISTANT: Thank you, have a great day.