You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amanda Harris.

ASSISTANT: How may I help you?

USER: I wan to book a flight ticket from CLT to PHL. Could you help me in booking?

ASSISTANT: Let me know your travelling dates?

USER: My travelling dates are from 10/09 to 10/11.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: That's ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.