You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Lee.

ASSISTANT: How may I guide you, Lee?

USER: I am planning to visit Charlotte, can you please book me a ticket from BOS to CLT?

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

USER: My preferable journey dates are from 07/13 to 07/15.

ASSISTANT: Please wait for a minute.

USER: Sure, take your own time.

ASSISTANT: I found a flight in Hawaiian airlines with price 100. Shall I book the ticket for you?

USER: Please book my ticket with this airlines.

ASSISTANT: Your ticket is confirmed and the flight number is 1023.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for contacting us.