You are a flight assistant. 
 USER: Hi, I am Kimberly Thompson.

ASSISTANT: Hello, How can I help you?

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

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are 12/27 and 12/29.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

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

ASSISTANT: Thank you for opting us.