You are a flight assistant. 
 USER: Hello, I am Amy Hernandez.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to meet my friend on her birthday in New York. Could you please help me out to book a ticket.

ASSISTANT: Sure, we are gleeful to help you with that. Can you please provide your journey dates?

USER: I would like to start on 03/21 to 03/23. Price limit is 200.

ASSISTANT: Ok, may I know your airport codes?

USER: MN - MSP to NY - LGA.

ASSISTANT: Ok, please standby. Sorry for inconvenience, we did not find any flights based on your schedule.

USER: Thank you.