You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you reserve a ticket from IAD to IAH?

ASSISTANT: Sure, I will help you. Can I have your planned travel dates please?

USER: My travelling dates are Aug 05 to 07.

ASSISTANT: May I know your connection preference?

USER: I need a connecting flight .

ASSISTANT: Do you have any class specification?

USER: I need economy class.

ASSISTANT: Can I have your name please?

USER: Charles Nelson here.

ASSISTANT: I found an economy class in Frontier airlines with fare 100 and it is a connecting flight. Can I proceed?

USER: Please proceed.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.