You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Mary Lee here. Can you book my ticket from BOS to SEA?

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

USER: My travelling dates are from 07/23 to 07/25.

ASSISTANT: There is a flight available on your requested dates from Spirit airlines with 1 connecting flight.

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight 1003.

USER: Thank you.

ASSISTANT: Thank you for using our service to fly.