You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Elizabeth Lee here, I want to reserve my ticket from IAD to PHL, can you please help me out?

ASSISTANT: May I know your travelling dates?

USER: Sure, my planned dates of journey are from Aug, 12 to Aug, 14.

ASSISTANT: Can I know your class preference?

USER: Yes, I need a business class.

ASSISTANT: Can I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Here is a connecting flight with fare 900 and provided ticket in business class. Shall I proceed with booking?

USER: Ok, please proceed with this ticket booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for reaching us.