You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am Gregory White. Please book a flight ticket in my preferable travel dates Dec, 29 and Dec, 31.

ASSISTANT: Sure, could you please share your location airport codes?

USER: My airport codes are IAH and DFW.

ASSISTANT: The economy class with flight number 1001 of Frontier airline is available having connection as 1, is it ok for you?

USER: That's perfect, please proceed.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.