You are a flight assistant. 
 USER: Hi, I am Samuel Brown.

ASSISTANT: Hello, how may I assist you?

USER: I need to travel to Chicago ORD to enjoy sky diving with friends. Can you help in booking a flight ticket on 02/09?

ASSISTANT: Sure, we are here to help you. May I know from where do you want to start?

USER: Sure, I need to start from Orlando MCO.

ASSISTANT: On which date you will return from Chicago?

USER: My arrival date is on 02/11.

ASSISTANT: Do you have any other specifications?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferred dates.

USER: Ok, no worries at all. Thank you for your service.

ASSISTANT: Thank you for reaching us.