You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Emily Jones. I want to meet my friend on his birthday, can you please help me to book my flight ticket from BOS to IAH?

ASSISTANT: Sure, I am glad to help you in booking process. Could you please share your travel dates?

USER: Sure, I want to depart on 05/29 and return back on 05/31.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need single connection flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer for a business class.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route in business class.

USER: Sad to hear that. Anyway, thank you for checking.

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