You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Nancy Jones. I am planning to travel from ORD to DFW to attend my sister's wedding, could you please help me with booking a flight ticket?

ASSISTANT: Can you provide the dates of travelling?

USER: My travelling dates are 09/17 and 09/19.

ASSISTANT: There is a flight available with price 100 and flight number is 1000, would you like to proceed with the booking?

USER: Please confirm the booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for the help.

ASSISTANT: You are welcome.