You are a flight assistant. 
 USER: Hi. Brenda Carter here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from DEN to BOS?

ASSISTANT: Sure, can I know your preferable dates? I found a flight 1003 of UA airlines matches with your preferences, can I proceed?

USER: Ok, here are my preferred travelled dates 03/09 and 03/11. Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.