You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me to book my ticket from SFO to LAX?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are June 26 and June 28 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer for single connecting flight.

ASSISTANT: Can I have your name please?

USER: Melissa Hill here.

ASSISTANT: Sorry Melissa Hill, no flights found with your given details.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.