You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dennis Thompson here.

ASSISTANT: How may I assist you Dennis?

USER: I like to go New York JFK for my vacations. Can you book my ticket from Seattle SEA.

ASSISTANT: Can I know the dates of travel?

USER: My travelling dates are 05/18 to 05/20.

ASSISTANT: Hold on for a moment. Flight 1012 of Delta airlines matches with your criteria, can I book the ticket?

USER: Yes sure.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a wonderful journey.