You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I have a meeting to attend in Minneapolis, can you please assist me to book a flight from Oakland?

ASSISTANT: Sure, can I know your travel dates?

USER: I will be travelling on July 30th and Aug 1st.

ASSISTANT: Do you have any airline preference?

USER: I would like to prefer normal-cost airline.

ASSISTANT: Would you like a break in your journey?

USER: I am fine with it.

ASSISTANT: May I know your other requirements?

USER: I want to depart and return both in the afternoon time.

ASSISTANT: Can you share your name please?

USER: My name is Karen Edwards.

ASSISTANT: Sorry, no flights are running on that route with your required travel dates.

USER: No problem, thank you anyway.

ASSISTANT: Thank you for contacting us.