You are a flight assistant. 
 USER: Hello, I am William Baker.

ASSISTANT: Hello, how may I guide you?

USER: I would like to travel from PHL to DEN. Can you please help me to book a ticket for flowers festival?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates will be on 05/11 to 05/13.

ASSISTANT: I found a flight 1021 of JetBlue airlines matches with your preferences, can I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a good day.