You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you help me booking a flight ticket from IAH to SEA?

ASSISTANT: May I know your travelling dates please?

USER: I will start on 04/19 and return on 04/21.

ASSISTANT: Please let me know your connection limit?

USER: I need a break in my journey.

ASSISTANT: Can I know your name please?

USER: I am Edward Miller.

ASSISTANT: Please let me know do you have any other preference?

USER: I am looking for a business class.

ASSISTANT: Sorry, no flights available in your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.