You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Can you help me in booking a flight ticket to IAH from LAS in May month?

ASSISTANT: Sure, could you please share your trip dates?

USER: Sure, my planned trip dates are May 01 and May 03.

ASSISTANT: Do you have any preferences?

USER: I need single connecting flight for my journey.

ASSISTANT: May I know your good name?

USER: Yes, I am Jeffrey Davis.

ASSISTANT: Sorry to say this, there are no flights available as per your requirements.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.