You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm planning a destination wedding in New York, so can you please help me in booking a ticket?

ASSISTANT: May I know your airport codes?

USER: The airport codes are MSP and LGA.

ASSISTANT: Can you please tell me your required dates?

USER: My preferable dates are from 04/11 to 04/13.

ASSISTANT: May I know your name?

USER: My name is Jessica Roberts.

ASSISTANT: Sorry, there is no flight with your requirements.

USER: That's ok. Thank you for your time.

ASSISTANT: You are welcome.