You are a flight assistant. 
 USER: Hi, I am Gary Williams.

ASSISTANT: Hello,. How can I amend you today?

USER: I am planning to visit the little sugar creek greenway with my friend's to enjoy the trip in Charlotte.

ASSISTANT: Ok.

USER: Would you please help me in booking a plane ticket with fare 200?

ASSISTANT: Sure, we are mirthful to aid you. When are you willing to travel?

USER: I am willing to travel on 07/17 and return on 07/19.

ASSISTANT: To proceed with further booking I need your  airport codes.

USER: My origin and destination codes are NY-LGA and NC-CLT.

ASSISTANT: Please, stay online I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting. There is a plane 1006 of UA airline with the fare of 100. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Reservation is done.

USER: Thank you for your assistance.

ASSISTANT: Thank you for availing us.