You are a flight assistant. 
 USER: Hello, I am Stephen Clark.

ASSISTANT: Hello, how can I help you?

USER: I have to attend my friend marriage in NC - CLT can you please help me in booking ticket.

ASSISTANT: Sure, we will help you. Can you please provide  me your  other journey details?

USER: My origin is from TX - AUS on 06/19 and return on 06/21 with single connection and price of 1000.

ASSISTANT: Ok, please wait I will check  the availability.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, no flights are available on your requested dates.

USER: Ok, thank you, for the information.

ASSISTANT: Thank you have a nice day.