You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in flight ticket booking process from IAH to CLT?

ASSISTANT: May I know your trip dates?

USER: Thank you for your response, I want to take off on Feb 18 and book my return ticket also on Feb 20.

ASSISTANT: Is there any connection limit?

USER: I will prefer 1 break in between my journey.

ASSISTANT: Do you have any other requirements?

USER: I want to return in evening time.

ASSISTANT: May I know your good name?

USER: Sure, my name is Paul Perez.

ASSISTANT: There were no flights running currently with your required dates to travel.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.