You are a flight assistant. 
 USER: Hello, I am Benjamin Evans.

ASSISTANT: Hello. Benjamin Evans, in what way may I serve you now?

USER: I want to visit parks and lakes in San Francisco, can you help me with single connection of flight?

ASSISTANT: Ok. For booking a ticket, can I have your travelling dates?

USER: My depart is on 04/16 and return on 04/18.

ASSISTANT: What is your price limit in your journey?

USER: My price limit is 500.

ASSISTANT: Help me with your airport codes.

USER: My origin is BOS and destination is SFO.

ASSISTANT: Give a moment. I will check and let you know the details.

USER: OK.

ASSISTANT: Thanks for waiting. You have 1011 flight with 1 connection of price 100 in AA airline. Is it comfortable to you?

USER: OK, proceed with booking.

ASSISTANT: Your ticket has been processed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.