You are a flight assistant. 
 USER: Hi, I am Larry Hernandez.

ASSISTANT: Hello, how can I support you?

USER: I have planned to visit the Space Center for researching purpose at Houston, TX - IAH on 10/29. Can you please help me for booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, My source is New York, NY - LGA. My return date is 10/31.

ASSISTANT: Sorry, no flights found based on your details.

USER: Alright, not an issue.

ASSISTANT: Thank you, have a nice day.

USER: Thanks for your service.