You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please help me to book a flight ticket from HOU to AUS.

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are from June, 26 to June, 28.

ASSISTANT: Can I know your other specifications?

USER: I need a single connecting flight and I prefer normal-cost airlines.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: We found a flight of United airline 1015, with the fare of 100.

USER: Please proceed for booking.

ASSISTANT: May I know your name for further process?

USER: Sure, my name is Richard Allen.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.