You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I best support you today?

USER: Please book a ticket to Houston, TX-IAH from New York, NY-LGA. I'm Betty Harris.

ASSISTANT: Sure, may I know your planned travelling dates?

USER: Departure date is 12/10 and intend to return by 12/12.

ASSISTANT: Do you need any stopover in between the journey?

USER: I need direct flight.

ASSISTANT: We found a direct flight with price 100.

USER: Ok.

ASSISTANT: Shall I proceed with booking?

USER: Please proceed with booking ticket.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks.

ASSISTANT: Thank you for opting us.