You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I provide assistance to you?

USER: I have a plan to visit Oakland. Can you please help me in booking flight ticket from DTW to OAK?

ASSISTANT: Sure, I can make your reservation right now.

USER: Thank you.

ASSISTANT: Can you please let me know your travelling dates?

USER: My trip dates are July 10 to July 12.

ASSISTANT: Do you need any layover in between journey?

USER: I need a flight with single connection.

ASSISTANT: Is there any specifications in airline?

USER: I want to fly in normal cost airline.

ASSISTANT: May I know your good name please?

USER: Myself Betty Wilson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are sorry to inform you that, there is no flight found on your requested dates.

USER: Ok, no problem. I will choose alternate way to reach my destination. Thank you.

ASSISTANT: Thanks for opting us, have a good day.