You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Rebecca Edwards here. I want to reserve a flight ticket for my journey to OAK for a business trip. Can you find a business class reservation?

ASSISTANT: Sure, can you share your journey dates?

USER: My journey dates are from 07/28 and I will be returning on 07/30.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight from ORD.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for opting us.