You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Sarah Anderson here. Can you please help me in booking a flight ticket from LGA to BOS?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: Sure, my trip dates are from 05/18 to 05/20.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no flight found as per your travelling details.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.