You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Alexander Hernandez here. I am planing to visit my parents who are living in San Francisco, will you help me with booking ticket from CLT to SFO?

ASSISTANT: May I know your travelling dates?

USER: Sure, I would like to travel on 10/24 and 10/26. I need a connection in between source and destination.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry for inconvenience, there is no flights found with your requirement.

USER: It's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for using our service.