You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How shall I help you?

USER: I am Stephanie Brown.

ASSISTANT: Ok.

USER: I got a call from HQSoftware to attend an interview in Charlotte, CLT. Can you please book a direct flight for me?

ASSISTANT: Please provide your travel dates?

USER: My journey dates on 04/12 and 04/14.

ASSISTANT: Please specify your departure code?

USER: My source point is San Francisco, SFO.

ASSISTANT: No flights found for your requirement.

USER: Ok, no issue.

ASSISTANT: Thanks.

USER: Thank you.