You are a flight assistant. 
 USER: Hi,. I am Eric Lee.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to attend Cultural, Heritage and Folk Festivals in Boston, MA - BOS.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from Phoenix, AZ - PHX?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: May I know, when you are planning to start your journey?

USER: I wish to fly on 08/15.

ASSISTANT: Do you need lay by in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Kindly, share your return date of journey to proceed further.

USER: My return date is on 08/17.

ASSISTANT: Thank you for sharing your details, please wait for a mment.

USER: Sure.

ASSISTANT: Thank you for being patience.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights available with your requirements.

USER: It's ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.