You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: I am Elizabeth Phillips. I need a connecting flight to Charlotte, can you please make a reservation from SFO to CLT?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey start on May 10th and arrival on May 12th.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with any class.

ASSISTANT: Thanks for your details, please be on hold. Sorry, there are no flights found on your specified travel dates.

USER: Sure, I need to start in the evening. Ok, no problem. Thank you.

ASSISTANT: Thank you.