You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from PHX to BOS?

ASSISTANT: Sure, could you please provide your journey dates?

USER: I would like to depart on Oct 7th and return on Oct 9th.

ASSISTANT: Are you looking for any preferred connections?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications to be met?

USER: Make sure that my depart time must be evening.

ASSISTANT: May I know your name to proceed further?

USER: I am Robert Lopez.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.