You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am Emily Gonzalez. Can you please help me with booking a flight ticket from DTW to CLT?

ASSISTANT: Sure, do you need any connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know when would you like to travel?

USER: My travel dates are 12/21 and 12/23.

ASSISTANT: At which time you would like to start and end your journey?

USER: I would like to depart at morning and return at morning.

ASSISTANT: Is there any class preference for your?

USER: No.

ASSISTANT: Unfortunately we did not find any flight on your route according to your given dates.

USER: No problem. Thanks for the help.

ASSISTANT: Thank you.