You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please reserve a flight ticket from SFO to JFK for my business meeting?

ASSISTANT: Sure, help me with the trip dates?

USER: Thank you, my boarding is on June 02 and please book my return ticket also on June 04.

ASSISTANT: Do you have any class preferences?

USER: Yes, I will prefer business class for my journey.

ASSISTANT: Let me know your connection limit?

USER: I can manage with any connection.

ASSISTANT: May I know your name please?

USER: Myself Samantha Perez.

ASSISTANT: Sorry, no flights were available at this moment.

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

ASSISTANT: Thank you for reaching us.