You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: Please book a ticket to New York from Seattle.

ASSISTANT: Sure, kindly mention your travel dates.

USER: Departure is by 03/19 and will return on 03/21.

ASSISTANT: May I know your airport codes?

USER: Airports codes are SEA and LGA.

ASSISTANT: Can you please mention your name?

USER: My name is Elizabeth Harris.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 500.

USER: Is it a connecting flight?

ASSISTANT: Yes.

USER: Please book a flight ticket.

ASSISTANT: Your booking is done.

USER: Please provide flight number?

ASSISTANT: Flight number is 1019.

USER: Thanks.

ASSISTANT: Thanks for reaching us.