You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from CLT to AUS?

ASSISTANT: Can you share your trip dates?

USER: Nov, 8 and Nov, 10 are my trip dates.

ASSISTANT: Do you need any connections?

USER: No, I need direct flight.

ASSISTANT: Are there any other preferences?

USER: No, thanks.

ASSISTANT: May I know your name?

USER:  Donald Clark here.

ASSISTANT: Sorry, there is no flight found under your details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.