You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you aid me to book my ticket from PHX to BOS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My trip dates are May 8 and May 10.

ASSISTANT: Ok, could I have your name please?

USER: Stephanie Martinez here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I prefer for single connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No other specifications for me.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: No issue. Thank you.

ASSISTANT: You are welcome, have a great day.