You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to meet my brother, can you please help me to book the flight ticket from HOU to JFK?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Could you please share your planned journey dates?

USER: I want to start my journey on 04/13 and return on 04/15.

ASSISTANT: Ok, could I have your name please?

USER: My name is Helen Martinez.

ASSISTANT: Sorry, there is no plane as per your planned travelling dates.

USER: Not an issue, thank you for checking.

ASSISTANT: My pleasure, have a great day.