You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: I am Donald Allen here, I want to reserve my ticket from BOS to LAX, can you please help me in this?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned dates of journey are from 07/17 to 07/19.

ASSISTANT: Can I have a moment please?

USER: Sure, take it.

ASSISTANT: There is a direct flight available with Hawaiian airline, shall I book it?

USER: But, I need a connecting flight.

ASSISTANT: Sorry, there is no connecting flight is available on your dates.

USER: Ok, that's fine. Thank you for your service.

ASSISTANT: You are welcome, have a nice day.