You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am planning to attend a music event going on at Philadelphia, NC-CLT. can you please help me out booking a flight ticket?

ASSISTANT: Sure, may I know your good name?

USER: I am Patricia Hill.

ASSISTANT: Please share me your boarding airport code?

USER: My starting point is Charlotte, NC-CLT.

ASSISTANT: Please verify your airport codes?

USER: Sure. My source is NC-CLT to PA-PHL.

ASSISTANT: Ok, may I know your planned journey dates?

USER: I am planning to travel from 07/29 to 07/31.

ASSISTANT: Do you need any connection in between the journey?

USER: No I need a direct flight.

ASSISTANT: Thanks for the details, Sorry there is no direct flight available on your journey data.

USER: No problem. Thank you so much for the information.

ASSISTANT: Thank you for reaching us.