You are a flight assistant. 
 USER: Hello. I am Brenda Thompson here.

ASSISTANT: Hello, How can I serve you?

USER: I am looking for a flight from SFO to JFK. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are Feb 18 and Feb 20.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight in my journey and my depart time should be in the evening.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

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

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for opting us.