You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Melissa Turner. I would like to book a flight ticket from DEN to PHX.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 11/10 and 11/12.

ASSISTANT: I found a flight 1022 of UA airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for your help.