You are a flight assistant. 
 USER: Hello, I am Sarah Lee.

ASSISTANT: Hello, how may I serve you today?

USER: I need a flight ticket to Seattle, WA - SEA for holiday vacation. Can you please book me a flight ticket?

ASSISTANT: Sure, we will book a ticket for you for that please share your source code.

USER: My origin is New York, NY - LGA.

ASSISTANT: May I know your price limit?

USER: My price limit must be 200.

ASSISTANT: Ok, also provide your journey dates for further process.

USER: Departure on 05/07 and return on 05/09.

ASSISTANT: Do you have connection limit?

USER: I need one connection.

ASSISTANT: Please stand by I will check the availability of flight and come back to you.

USER: Ok.

ASSISTANT: Thank you, sorry no flight found with your details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Have a nice day.