You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning.

USER: My name is Samantha Hall.

ASSISTANT: How may I guide you?

USER: I would like to visit Detroit to meet my family in the month December.

ASSISTANT: Sure, can I know your preferable dates of travel?

USER: My preferable dates to travel are from 12/13 to 12/ 15.

ASSISTANT: Ok, can I know your airport codes?

USER: The airport codes are MCO and DTW respectively.

ASSISTANT: I am sorry to inform you that there are no flights available on your given dates.

USER: That's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your time.