You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Debra Allen. Can you please find a flight for me from Oakland to Charlotte?

ASSISTANT: Sure , we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: The planned travel dates are July 01 and July 03.

ASSISTANT: May I know your source point and detsination point?

USER: My preferable airport codes are OAK and CLT.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Ok, please make sure that the connection limit is 1.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: It's ok, not a problem. I will choose some other source to travel. Thank you for your time.

ASSISTANT: Thanks for approaching us.