You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight from PHL to IAH?

ASSISTANT: Sure, let me know your journey dates.

USER: My travel dates are Dec 7th and 9th.

ASSISTANT: Is there any connection preference?

USER: I want to fly in a direct flight.

ASSISTANT: Are you looking for any specific airlines?

USER: I prefer to fly with any well known airlines.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight available as per your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Can I have your name for documentation?

USER: My name is Ryan Rodriguez.

ASSISTANT: Thank you for reaching us.