You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jennifer Allen from New York. Could you please book a flight ticket from LGA to LGA?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you for your response, I want to departure on Sept 12 and please confirm my return ticket also on Sept 14.

ASSISTANT: Do you have any class preference?

USER: Yes, I want business class flight so please check with this.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: You are welcome. Thank you for reaching us.