You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Barbara Jones here. Please help me out in booking the ticket from IAH to SEA.

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates will be Jun 5 to Jun 7.

ASSISTANT: May I know your connection preferences?

USER: Flight has to be 1 connection.

ASSISTANT: Do you have any other requirements?

USER: My depart time time must be in the evening.

ASSISTANT: May I know your airline preferences?

USER: Normal-cost is my airlines preference.

ASSISTANT: There is a business class flight 1006 of United airlines, can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.