You are a flight assistant. 
 USER: Hello, Sandra Jackson here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to meet my cousin at Charlotte, Can you please book a ticket?

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My source is Denver, CO - DEN. My destination airport code is NC - CLT.

ASSISTANT: Please provide me your planned journey dates.

USER: My planned dates are 03/29 and 03/31.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a connection.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flights found with your given dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.