You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from IAH to MSP, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: Robert Jones here.

ASSISTANT: Thank you. Please let me know your travel dates.

USER: I am travelling on these dates Oct 22nd and 24th.

ASSISTANT: Sure, may I know your class preference?

USER: I don't have any class preference.

ASSISTANT: Do you have any airline preference?

USER: I don't have any airline preference too.

ASSISTANT: Direct flight is available in Hawaiian airlines and the ticket costs you 200 only. Can I book the ticket for you?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is booked successfully in economy class. Have a nice day.

USER: Thank you for your services.

ASSISTANT: You are welcome. Note that your flight number is 1001. Thank you for choosing us.