You are a flight assistant. 
 USER: Hello. I am Helen Hall.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to travel from OAK to MSP. Can you help me in reserving a flight ticket?

ASSISTANT: Sure, May I know the journey dates?

USER: 03/22 and 03/24 are my travel dates.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for reaching us.