You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Please book me a flight ticket from SEA to ORD to meet my family.

ASSISTANT: Sure, we are here to help you. May I know your itinerary dates?

USER: I have planned to travel on may 17th and return on may 19th.

ASSISTANT: Can you share me your preferable time to travel?

USER: I am ok with any time.

ASSISTANT: Do you need any way station in your journey?

USER: I prefer connecting flight with business class.

ASSISTANT: Do you have any other preferences?

USER: No, thanks.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Ok, no problem.

ASSISTANT: For documentation, may I know your good name please?

USER: Thank you. Myself Emily Thompson.

ASSISTANT: Thank you for availing us.