You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight ticket from IAD to LGA?

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

USER: I will start on Mar, 31 and return on Apr, 2.

ASSISTANT: Is there any class preference for you?

USER: No, thanks.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Your good name please.

USER: Donald Hernandez.

ASSISTANT: We found an airline: Delta Airlines, flight number: 1002 and price is 300 with one connection.

USER: Please go ahead.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.