You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please help me to book a flight ticket from ATL to IAH?

ASSISTANT: Please provide your travelling dates.

USER: My travelling dates are Feb 19 and Feb 21.

ASSISTANT: Do you have specification?

USER: I prefer a normal cost airline.

ASSISTANT: Is there connection preference?

USER: I need a single connecting flight.

ASSISTANT: Found ticket with United airlines for price 100 having flight number 1011.

USER: Ok, proceed with the booking.

ASSISTANT: Can I know your name?

USER: I am Nancy Anderson.

ASSISTANT: Ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you.