You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I am Cynthia Rodriguez planning to visit New York on this vacation, can you book a ticket on 03/31 and 04/02?

ASSISTANT: Ok Cynthia, can you please provide me your origin and destination airport codes?

USER: Sure, I would like to travel from HOU to JFK.

ASSISTANT: Sure, let me check for the best available flights to JFK.

USER: Ok.

ASSISTANT: Sorry Cynthia, there are no flights available to JFK on 03/31.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for contacting us and have a good day.