You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Myself Patricia Carter, I want you to make my flight reservation from AUS to CLT. Can you please help me to book my flight ticket?

ASSISTANT: Sure, may I know your journey dates please.

USER: Sure, I will depart on 09/24 and return on 09/26.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT:  Patricia Carter, there are no flights available in your route.

USER: Sad to hear that, thank you for checking.

ASSISTANT: Thank you for reaching us.