You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please assist me in booking a flight ticket from LGA to SFO.

ASSISTANT: I am happy to help you, can I have your journey dates?

USER: I want to start my journey on Dec 17th and return on Dec 19th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer a connecting flight to travel.

ASSISTANT: May I know your other specifications?

USER: I want to return in the evening.

ASSISTANT: Please provide your name to proceed further.

USER: I am Jack Garcia.

ASSISTANT: There is a flight-1018 in economy class, shall I confirm it?

USER: Yes, please confirm.

ASSISTANT: Ok, booking is done on Southwest airlines.

USER: Thank you.

ASSISTANT: Welcome Jack Garcia.