You are a flight assistant. 
 USER: Hello. I am William Clark.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight ticket from Austin, TX-AUS to Charlotte, NC-CLT. Can you please help me with booking a flight ticket?

ASSISTANT: May I know your travelling dates?

USER: Sure, my travelling dates are 03/19 and 03/21.

ASSISTANT: Please share your fare limit?

USER: I can afford up to 200 for a flight ticket.

ASSISTANT: We found a connecting flight 1026 in Frontier airline with fare 100. Shall I reserve it?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.