You are a flight assistant. 
 USER: Hi, I am Christopher Allen.

ASSISTANT: Hello, How can I help you the day?

USER:  can you help in booking a direct flight?

ASSISTANT: Sure, I am here to help you. Please mention your preferable travel dates?

USER: I would start on 03/22 and return on 03/24.

ASSISTANT: Ok, Is there any restriction on your price?

USER: Yes, it must be under 1000.

ASSISTANT: Kindly mention your travel airport codes please?

USER: I want to experience riddle room game in Minneapolis so I want to reach MN - MSP from WA - SEA.

ASSISTANT: Ok, Please hold on for a minute. I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for being patient. We hardly tried to provide you flight, unfortunately no flights are available to that locations.

USER: Its Ok. Thanks for your response.

ASSISTANT: Thank you for approaching us.