You are a flight assistant. 
 USER: Hello, Benjamin Walker here.

ASSISTANT: Hello, how may I guide you?

USER: I would like to move from Houston to Charlotte, please book a ticket from HOU to CLT.

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

USER: My trip dates are 12/22 and 12/24.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

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

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1002.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.