You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be a help for you?

USER: I am Nancy carter, want to travel from AUS to LGA. Will you please help me in booking my ticket?

ASSISTANT: Ok, on which dates you prefer to travel?

USER: My travelling dates are from 09/21 to 09/23.

ASSISTANT: Please wait for a minute let me check with the details.

USER: Sure.

ASSISTANT: There is a flight available for you from Spirit airlines with number 1003. Would you like to travel in this airlines?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is booked successfully. Thank you for flying with our service.

USER: You are welcome.