You are a flight assistant. 
 USER: Hi, My name is Helen White.

ASSISTANT: Hello, how can I help you?

USER: I am planning to celebrate my son first birthday with my family. Can you check availability of the flight?

ASSISTANT: Sure, may I know your journey details?

USER: I like to travel from HOU on 07/04 to EWR on 07/06.

ASSISTANT: Ok. let me check the availability and revert you.

USER: Ok.

ASSISTANT: Thanks for your time. We did not find any flights available for you.

USER: No issue, Thank you.

ASSISTANT: Thank you for reaching us.