You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Christopher Wright here. I want to travel from MSP to OAK. Please help me to book a ticket.

ASSISTANT: Sure, I am glad to help you. Can you please provide your planned dates of travelling?

USER: My travelling dates are 09/13 and return date is 09/15.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Thanks for the information. Ok.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with your planned dates of traveling.

USER: Thanks for the information.

ASSISTANT: Thank you for reaching us, have a great day.