You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Raymond Allen here. I want to book a flight ticket from AUS to CLT. Can you help me in that?

ASSISTANT: Can you share me your planned trip dates?

USER: My trip dates are Nov 25 to Nov 27.

ASSISTANT: Do you have any specification?

USER: My return should be in the evening.

ASSISTANT: Do you have any other specification?

USER: I need a connecting flight in economy class.

ASSISTANT: Is there anything else I want to check with?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, Raymond Allen. Sorry, there are no flights found on this dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for connecting us.