You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I need to travel from SFO to LAS, can you help me in doing that?

ASSISTANT: Sure, May I know the travelling dates?

USER: My journey dates are Oct 18 to 20.

ASSISTANT: Do you have any connection limit?

USER: No.

ASSISTANT: Is there any other requirements?

USER: No, please proceed with above details.

ASSISTANT: May I know your name?

USER: Katherine Martin here.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.