You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need you to book a flight ticket from IAH to SEA. Please help me.

ASSISTANT: Sure, may I know your name please?

USER: My name is Karen Hall.

ASSISTANT: May I know on which dates you are willing to travel?

USER: December 5 and 7 are my planned travelling dates.

ASSISTANT: Is there any specific class preference for you?

USER: I am happy to fly in any class.

ASSISTANT: May I know your connection limit please?

USER: I need a break in my journey.

ASSISTANT: May I know your preferable time for journey?

USER: I am flexible to fly at any time.

ASSISTANT: There is a connecting flight of fare 100 with economy class in American airline, shall I proceed for booking?

USER: Yes, please book the flight ticket.

ASSISTANT: Your ticket has been confirmed with flight number 1005.

USER: Thank you.

ASSISTANT: You are welcome, have a safe journey.