You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from PHX to BOS. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from Apr 27 to Apr 29.

ASSISTANT: Do you have any preferences?

USER: I prefer business class to travel.

ASSISTANT: Is there any time concern?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Ruth White.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.