You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: I am Ryan Parker. Can you please help me in booking my flight ticket from IAH to PHX?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are Dec 31 and Jan 02.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class ticket.

ASSISTANT: Do you  need any connection in between journey?

USER: I need connecting flight.

ASSISTANT: Is there any more specifications do you need?

USER: I want my depart flight at afternoon time.

ASSISTANT: Ok, please be on hold.

USER: Ok, sure.

ASSISTANT: Sorry we did not find any flights matching your preferences.

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you for opting us.