You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Taylor.

ASSISTANT: How may I assist you?

USER: I am planning for a trip with my family, can you help me with booking from LGA to BOS?

ASSISTANT: Sure, may I know your travel dates?

USER: Ok, my planned dates should be from 09/16 and 09/18.

ASSISTANT: Sorry, there are no flights found on your preferable travel dates.

USER: It's ok, thanks for your information.

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