You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to travel from LGA to SFO. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you out. To start the reservation firstly provide me your name.

USER: I am Brian Edwards.

ASSISTANT: May I know your trip dates to check the availability  of the flight?

USER: I want to fly in the flight on Feb 23 and Feb 25.

ASSISTANT: Please provide me your connection limit.

USER: I want to travel in a connecting flight.

ASSISTANT: Do you have any class limit?

USER: I prefer to travel in economy class.

ASSISTANT: Sorry Brian Edwards, here I didn't got any flight in your route as per your request.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.