You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Sure, can you please let me know your preferred journey dates?

USER: The journey dates are 06/11 to 06/13.

ASSISTANT: May I know your source and destination airport codes?

USER: The airport codes are from TX-DFW to CA-SFO.

ASSISTANT: Let me know your name?

USER: Sure, my name is Scott King.

ASSISTANT: Sorry, there is no flight as per your details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us, have a nice day.