You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are 10 to 12 of Feb.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

ASSISTANT: May I know your name for the booking?

USER: I am Carolyn Phillips.

ASSISTANT: Do you have any another specifications on your journey?

USER: No.

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

USER: Oh! that very sad to hear, thank you.