You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to have a good trip in IL - ORD with the family.

ASSISTANT: Oh! nice.

USER: So, can you help me to book my flight ticket from MA - BOS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are 05/30 and 06/01.

ASSISTANT: Sorry to say this, because no flights with your requirements.

USER: It's ok fine.

ASSISTANT: Thank you for contacting us.

USER: Thank you for the help.

ASSISTANT: May I know your name?

USER: Rachel Campbell here.

ASSISTANT: Rachel, have a good day.

USER: Thank you.