You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Sarah Parker. I am planning to book a ticket from HOU to EWR. Can you please help me out?

ASSISTANT: Yes, can you share me your travelling dates?

USER: These are my travelling dates 03/15 and return back on 03/17.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight found on your requested dates.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.