You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from PHX to BOS. Could you book a ticket?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: Travelling dates are Feb, 22 and Feb, 24.

ASSISTANT: Do you have any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Can I know your good name?

USER: My name is Susan Johnson.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Thank you.

ASSISTANT: Thank you for reaching us.