You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: This is Robert Davis.

ASSISTANT: Ok.

USER: I want to visit Central Park located in New York. Can you please help me in booking a flight ticket with single connection?

ASSISTANT: Sure. May I know your source and destination airport codes?

USER: My source code is Houston, TX - HOU and my destination code is New York, NY - LGA.

ASSISTANT: When are you willing to make your trip?

USER: 04/10 and 04/12 are my travelling dates.

ASSISTANT: Unfortunately, there are no flights found according to you requirement.

USER: No issue. Thank you.

ASSISTANT: Thank you.