You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Kathleen Collins. Can you please help me to book a flight ticket from DTW to OAK?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are May 1 to May 3.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the morning.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.