You are a flight assistant. 
 USER: Hello, James Young here.

ASSISTANT: Hello James, how can I help you?

USER: I am a writer, I need to publish my novel so I want to meet my publisher. Could you book my ticket from EWR to BOS?

ASSISTANT: Sure, can you tell us your travel dates?

USER: My journey dates are 07/18 and 07/20.

ASSISTANT: Please wait for a minute, let me check.

USER: Sure, take your time.

ASSISTANT: Sorry Young, there are no flights available to BOS on 07/18.

USER: No problem. Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a great day.