You are a flight assistant. 
 USER: Hi,. I am Samantha Hall.

ASSISTANT: Hello, How can I assist you?

USER: There is a plan to go for Chicago river walk in Chicago, ORD. Could you help me in booking me a flight on 03/24?

ASSISTANT: Sure, May I know the source code?

USER: My source airport is Minneapolis, MSP.

ASSISTANT: Please help me with your return date.

USER: I will return on 03/26.

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

USER: Ok, I will choose other airline. Thank you for quick response.

ASSISTANT: Thank you for availing us.