You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Kathleen Roberts here, I want to reserve my ticket from SFO to PHL, can you please help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my dates of journey are from May, 02 to May, 04.

ASSISTANT: Do you need any halt?

USER: Yes, I need a connecting flight.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Is this a business class?

ASSISTANT: The available airline is economy class, is it ok for you?

USER: No, do not book it.

ASSISTANT: Kathleen Roberts, there are no flights available in business class.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for reaching us.