You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Allen.

ASSISTANT: How can I assist you?

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

ASSISTANT: Sure Allen, can I know the travel dates please?

USER: I am travelling on these dates 08/27 and 08/29.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Hawaiian airline with price 200, can I book it?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thank you for your services.

ASSISTANT: Thank you for approaching us.