You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: In Denver, I have some important work. Can you please help me in ticket booking from IAH?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are from 02/19 to 02/21.

ASSISTANT: Is there any class preference?

USER: My class preference is economy class.

ASSISTANT: Do you have any other preferences?

USER: I want a single connection and my airline preference is normal cost airline.

ASSISTANT: May I know your name?

USER: Myself Amy Edwards.

ASSISTANT: You have a connecting flight 1012 in  Delta airline ans price 100, Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you.