You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Anthony Robinson. I planned a vocational trip from OAK to DEN, can you help me in booking a ticket?

ASSISTANT: Can you tell me when you plan your trip?

USER: My travel dates are from 12/27 to 12/29.

ASSISTANT: I found a flight inSpirit airline, ticket charges are 200 with 1 connection. Would you like to book this flight?

USER: That's good to hear, please book my ticket.

ASSISTANT: OK. Your ticket is booked and flight number is 1002. Have a safe journey.

USER: Thank you for your help.