You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: James Hill here.

ASSISTANT: How may I assist you today?

USER: Can you book a flight ticket for my airport codes that is from SEA to BOS?

ASSISTANT: Sure, may I know your travel dates?

USER: The travel dates for the journey are from Sept 02 to Sept 04.

ASSISTANT: Please share me your name.

USER: I am James Hill.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Not a problem. Thank you.

ASSISTANT: Thank you.