You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Myself Justin Roberts.

ASSISTANT: Nice to meet you Roberts.

USER: I want to travel from EWR to BOS, can you please book a flight ticket for me?

ASSISTANT: Sure, may I know the journey dates please?

USER: My travelling dates are from 12/05 and 12/07.

ASSISTANT: Sorry to say this Justin, there are no flights on your requested dates. Sorry for the inconvenience provided.

USER: it's ok. Thank you for the information.

ASSISTANT: Thank you for choosing us. Have a good day.