You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Gary Lewis here. I want to attend a Musical event in Oakland. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your airport codes please?

USER: My airport codes are from MSP to OAK.

ASSISTANT: Can I have your journey dates please?

USER: My departure date is 10/26 and return date is 10/28.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Gary, no flights has been found on your journey dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.