You are a flight assistant. 
 USER: Hello, I am Jennifer Martinez.

ASSISTANT: Hello,. How may I help you?

USER: Can you please help me to book a flight ticket from OAK to BOS?

ASSISTANT: Let me know your travel dates?

USER: My travelling dates are 01/22 to 01/24.

ASSISTANT: Sorry, no flights found with your travelling dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.