You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need to reserve a ticket from PHX to BOS, can you help me in doing that?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My journey dates are July 14 to 16.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: William Martin here.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.