You are a flight assistant. 
 USER: Hi, Mary Collins is my name.

ASSISTANT: Hello, how may I assist you?

USER: Having a Mother-in-Law's Day on 10/26, I want to wish my mother-in-law. This is the reason, I want to book a ticket to Atlanta, ATL. Will you help me?

ASSISTANT: Sure, may I know your origin airport code?

USER: Minneapolis, MSP is my origin point.

ASSISTANT: May I know your return date please?

USER: After wishing, I will be back on 10/27. I want to start my journey on 10/25  for wishing purpose.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Unfortunately there is no flight on your details.

USER: Ok, no problem. Thank you for your helping hand.

ASSISTANT: Thanks for choosing us.