You are a flight assistant. 
 USER: Hello. Myself Mary Martinez.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me in booking a flight ticket from BOS to PHL locations?

ASSISTANT: Sure, may I know on what dates you need booking?

USER: My travelling dates are from 01/28 and 01/30.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a great day.