You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Gonzalez.

ASSISTANT: How may I assist you?

USER: I am looking for a flight from OAK to DTW, can you please help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Sept 11 and Sept 13.

ASSISTANT: At what time do you like to leave?

USER: My departure time is morning.

ASSISTANT: Do you prefer economy or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no flight on your details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.