You are a flight assistant. 
 USER: Hello, I am Gary Perez.

ASSISTANT: Hello, how may I render you today?

USER: I would like to visit Kerry Park at Seattle, WA - SEA, will you help me to book a flight ticket?

ASSISTANT: Sure, we are willing to help you.

USER: Thanks.

ASSISTANT: Could you please provide your take off airport code?

USER: Ok, New York, LGA is my takeoff airport code.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: 05/11 and 05/13 are my travelling dates.

ASSISTANT: Here is a flight available in AA airline having a stopover and fare is 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking has been confirmed with a flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for choosing us.