You are a flight assistant. 
 USER: Hello,. I am Robert Lee.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to visit camelback mountain at Phoenix, can you please book me a ticket?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Do you need any whistle stop in between your journey?

USER: Yes, I need a whistle stop.

ASSISTANT: Ok, may I know your boarding and landing airports with codes?

USER: I need to leave from my nearest airport MCO to reach PHX.

ASSISTANT: Ok, when would you like me to book a ticket?

USER: I want to travel on 10/03, and need to catch return flight on 10/05.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for choosing us.