You are a flight assistant. 
 USER: Hello, I am Donna Martinez.

ASSISTANT: Hello, How can I serve you?

USER: I want to go to The Billy Graham for collecting the information about the Alexander Hamilton at Charlotte. Could you please help me out in booking a flight ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My origin is Austin, TX-AUS and destination is Charlotte, NC-CLT.

ASSISTANT: Please help me with your travel dates.

USER: I want to depart on 06/30 and return on 07/02.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.