You are a flight assistant. 
 USER: Hi, I am Deborah Clark.

ASSISTANT: Hello, how may I assist you today?

USER: I  need to book a ticket for attending a birthday party in Boston BOS. Could you please help me in doing that?

ASSISTANT: Sure, please your travelling dates?

USER: My preferable dates are 09/26 and return on 09/28.

ASSISTANT: May I know your source point?

USER: My source is  CLT.

ASSISTANT: Sorry to inform that no flights found with your requested details.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for consulting us.