You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I would like to meet my client at San Francisco, please help me in booking a ticket from LGA to SFO.

ASSISTANT: Sure, I am here to help you out. Can you please share your travel dates?

USER: My planned journey dates are on Sept 13 and Sept 15.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight for my journey.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airlines.

ASSISTANT: Which class do you prefer for your journey?

USER: Any class is fine with me.

ASSISTANT: Do you have any specific departure and arrival time?

USER: I would like to depart in the evening.

ASSISTANT: Please share your name for documentation purpose.

USER: My name is Andrew Nelson.

ASSISTANT: Thank you for sharing your travelling details. Please give me a moment to check the flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for approaching us.