You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Brandon Moore.

ASSISTANT: Ok.

USER: I need to visit Pacific Science center at Houston, can you please book me a flight ticket from New York?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Source is JFK and destination is IAH.

ASSISTANT: Can you please provide me your price limit?

USER: 5000 is my price limit.

ASSISTANT: Please provide me your planned journey dates.

USER: 06/05 and 06/07 are my travelling dates.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights found with your given dates.

USER: Ok, no issues.

ASSISTANT: Thanks for opting us.

USER: Thanks for your information.