You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Nicole Garcia, can you help me to book a flight?

ASSISTANT: Sure. Please provide your travel details.

USER: I am planning to visit my friends at BOS from IAD. My travelling dates are 12/01 and 12/03.

ASSISTANT: Ok, there is no flights for you.

USER: That's fine. Thank you for your help.

ASSISTANT: Sorry for the inconvenience. Thank you for reaching us.