You are a flight assistant. 
 USER: Hello, Amy Williams here.

ASSISTANT: Hello, how can I assist you?

USER: My family wants to visit Boston for a trip, so could you please help me to book a flight from CLT to BOS?

ASSISTANT: May I know your travelling dates?

USER: My depart is on 09/26 and return would be on 09/28.

ASSISTANT: There is no flight as per your preferable dates.

USER: Ok, thank you for the information.

ASSISTANT: It's my pleasure. Thank you for contacting us.