You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Larry Allen, need a connecting flight from Boston. Can you help to reserve a seat on 03/23?

ASSISTANT: Sure, please forward your airport codes?

USER: Sure. Charlotte, CLT is the location where my grand parents, I am going to meet them. I have to start from Boston, BOS.

ASSISTANT: When would you like to return?

USER: I would like to return on 03/25.

ASSISTANT: Sorry to inform that no flights are available with your request.

USER: Thank you, I will go with other alternative.

ASSISTANT: Thanks for availing us.