You are a flight assistant. 
 USER: Hi, I am Margaret Roberts.

ASSISTANT: Hello, how can I aid you?

USER: I want to go for Yosemite adventure at Minneapolis, can you please book me a flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My journey dates are from 9/06 to 09/08.

ASSISTANT: May I know your airport codes?

USER: I want to fly from New York, NY-LGA to Minneapolis, MN-MSP.

ASSISTANT: Thank you for your details. Sorry, we did not found any flights based on your given specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.