You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Brenda Smith.

ASSISTANT: Ok.

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, OAK. Can you please reserve a flight ticket under the  fare of 200?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Where are you heading from?

USER: My boarding point is Minneapolis & St. Paul, MSP.

ASSISTANT:  Do you prefer any halt in between your journey?

USER: Yes, I prefer a halt in between journey.

ASSISTANT: May I know when you have planned to travel?

USER: My journey dates on 11/16 and 11/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.