You are a flight assistant. 
 USER: Hello, I am Laura Gonzalez.

ASSISTANT: Hello Laura, how can I help you?

USER: I wish to go for Minneapolis river walk along with my fiance.So, can you book me a flight ticket to Minneapolis & St. Paul, MSP?

ASSISTANT: Sure, Please provide your dates of journey to search a flight on a specific date?

USER: My schedule dates of journey is 03/09 to 03/11.

ASSISTANT: Help me with your source airport code?

USER: I want to board from Washington, IAD.

ASSISTANT: Sorry, no flights are available for you on those dates. Thanks for reaching us, have a nice day.

USER: It's ok, no problem. Thank you for your information.