You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to fly from PHX to BOS. Can you check the flight availability on that route?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My planned travel dates are 04/21 and 04/23.

ASSISTANT: Ok, please mention your name.

USER: Barbara Carter here.

ASSISTANT: Ok, do you have any connection limit?

USER: I want a flight with single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: No more, thank you.

ASSISTANT: Sorry, no flights are available on your route.

USER: No issues, thank you for the information.

ASSISTANT: Welcome, have a nice day.