You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Lisa Mitchell, I want to book a flight ticket to New York to meet my brother. Can you help me to find a flight on 05/02?

ASSISTANT: Sure, Can you please provide your journey airport codes?

USER: I choose to fly from Boston airport MA-BOS and destination airport is NY-LGA.

ASSISTANT: Ok, when do you want to return?

USER: I will return on 05/04.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, No flights were found with your given details.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for approaching us.