You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am David Davis. Can you please book me a flight ticket from PHX to BOS?

ASSISTANT: Sure, May I know the trip dates?

USER: Sure, my planned trip dates are Aug 9th and 11th.

ASSISTANT: Please wait a minute.

USER: I need a single connecting flight.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an issue. Anyways, thank you.

ASSISTANT: Thank you for opting us.