You are a flight assistant. 
 USER: Hi, I am Linda Green.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please reserve me a flight ticket from Houston, TX - IAH to Washington, DC - IAD?

ASSISTANT:  Would you prefer a morning or an afternoon flight?

USER: My depart time should be in the afternoon.

ASSISTANT: When you are planning to depart and arrive?

USER: My trip dates are 12/05 - 12/07.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight available with depart time afternoon of flight 1012 and price is 100. Can I confirm your booking in Frontier airline?

USER: Please proceed.

ASSISTANT: Your seat has been reserved in an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.