You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I address you today?

USER: I am planning to go to Oakland to attend my sister birthday function. Can you help me?

ASSISTANT: Sure. Please let me know your planned travelling dates.

USER: My journey dates are 05/05 and 05/07.

ASSISTANT: Do you need a halt in between your journey?

USER: I need break in my journey.

ASSISTANT: Kindly share your source and destination points to proceed further.

USER: My airport codes are DTW-OAK.

ASSISTANT: What price would you like to put on flight ticket?

USER: I can spend money for a ticket maximum 200.

ASSISTANT: May I know your name please?

USER: Elizabeth Phillips here.

ASSISTANT: Thank you for sharing your journey details, sorry to inform you that there are no flights found with your essential details.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.