You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kenneth Martinez.

ASSISTANT: How may I help you?

USER: I want to book a flight ticket from DTW to SEA. Can you help me?

ASSISTANT: Sure, may I know your preferable travelling dates?

USER: Thank you. July 22nd and 24th are my travelling dates.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I need to return in the morning.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.