You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I aid you today?

USER: Please book a ticket from Minneapolis & St. Paul, MN-MSP to New York, NY-LGA.

ASSISTANT: Sure, I will help you in booking, can you please share your travelling dates?

USER: My departure is on 06/26 and 06/28 is return date.

ASSISTANT: Sorry for the inconvenience, no flights as per your details. May I know your name please?

USER: I am Amy Smith. Thanks.