You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking my flight ticket from HOU to AUS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Aug 23 and Aug 25.

ASSISTANT: Do you have any specifications?

USER: I need my ticket in normal cost airline.

ASSISTANT: Please share me your name.

USER: Myself Lisa Allen.

ASSISTANT: We found a economy class flight with United airline, flight number: 1018. Shall I book this ticket for you?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved. Thank you.

USER: Thank you for your help.