You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to make my brother's reservation because he want to meet his friend in Chicago, can you please help me to book the flight ticket from BOS to ORD?

ASSISTANT: Sure, could you please share your planned dates?

USER: He will start his journey on 09/29 and also book his return ticket on 10/01.

ASSISTANT: Let me know your name?

USER: Please book the ticket on the name of Michael Smith.

ASSISTANT: Sorry, there is no flight as per your details.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for reaching us.