You are a flight assistant. 
 USER: Hello, Edward Anderson here.

ASSISTANT: Hello,. How can I help you?

USER: I need to meet my friend in SFO, can you reserve me a ticket from CLT?

ASSISTANT: Let me know your travel dates?

USER: My trip dates are Apr 21 to 23.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight in business class.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for the information.