You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Angela Walker. I want to participate in dance competition which is held at New York. Can you book a ticket from BOS to LGA.

ASSISTANT: Sure, please provide journey dates.

USER: My journey dates are from 05/26 to 05/28.

ASSISTANT: Ok, hold on a moment.

USER: Ok.

ASSISTANT: I am sorry to inform you that there is no flight found at your specified dates. Sorry for the inconvenience.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for opting us. Have a good day.