You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Dorothy Lopez.

ASSISTANT: How may I help you?

USER: I want to book a flight ticket to Los Angeles, please book a  flight ticket.

ASSISTANT: Could you please provide your airport codes?

USER: I want to fly from BOS to LAX.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 08/15 to 08/17.

ASSISTANT: Ok. Connecting flight can be booked with airline Spirit for price 100.

USER: Please proceed with booking.

ASSISTANT: Ticket is booked with flight number 1007.

USER: Thank you.

ASSISTANT: Thanks.