You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book a flight ticket from PHX to IAH?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My trip dates are May 29 and May 31 respectively.

ASSISTANT: Is there any connection limit for you?

USER: I prefer for connecting flight to travel.

ASSISTANT: Are there any other specifications?

USER: I prefer for economy class to travel.

ASSISTANT: Please help me with your name for booking.

USER: Daniel Green here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.