You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Richard Mitchell. I want to go for an Yosemite adventure to Chicago-ORD from Seattle-SEA can you please help me in booking a ticket?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My journey dates are Jun 13 to Jun 15.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I looking for a flight in business class.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us, have a great day.