You are a flight assistant. 
 USER: Hi, George Nelson here.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a live music concert at Denver, DEN so, could you please book a ticket on 05/21?

ASSISTANT: Sure, please share me your return date?

USER: I would like to return on 05/23.

ASSISTANT: Kindly mention me your origin code?

USER: My preferred boarding point is Boston, BOS.

ASSISTANT: Thanks for your details. We found 1027 AA airline with single connection and price of 500. Shall I proceed with booking?

USER: Please confirm my ticket with this flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.