You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I assist you today?

USER: I planning to celebrate my brother birthday party with my family at Boston, so can you book a ticket with a connecting flight?

ASSISTANT: Sure, I am here to help you. May I know your price limit?

USER: I can afford upto 200 on ticket.

ASSISTANT: Help me with the source and destination codes.

USER: My source is Charlotte, NC-CLT  and destination is Boston, MA-BOS.

ASSISTANT: May I know on which dates you have planned to travel?

USER: My planned dates of travel are 06/13 and 06/15.

ASSISTANT: Thank you for the details, please wait a while.

USER: Sure.

ASSISTANT: Thank you for being waiting. Sorry, I found no flights were available as per your credentials. May I know your name?

USER: No problem, my name is Patrick Thompson.

ASSISTANT: Thank you for reaching us for your flight booking process.

USER: Thank you for the information.