You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Lewis.

ASSISTANT: How may I assist you?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket?

ASSISTANT: May I know your travel dates?

USER: I would like to take off on 01/18 and return on 01/20.

ASSISTANT: Please help me with your airport codes?

USER: My source airport code is HOU and destination airport code is LGA.

ASSISTANT: There is a flight with flight number 1025 with price is 300, can I proceed?

USER: But I need a flight ticket with price limit 200.

ASSISTANT: Sorry for the inconvenience, thank you for reaching us.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: Most welcome.