You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Amanda Martin here. for my family trip, I want to book the flight tickets from CLT to ATL. Can you help me in this?

ASSISTANT: Sure. If you have any planned travelling dates, can you please tell us?

USER: My travelling dates are from 11/12 to 11/14.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Martin, all flight tickets are sold out in your planned travel dates.

USER: Thank you.

ASSISTANT: Thank you for approaching us.