You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to book a flight from IAH to HOU, can you please help me to book a flight ticket?

ASSISTANT: Surely, I will help you out. When you have planned to travel?

USER: Sure, my travelling dates are Apr 18 and Apr 20.

ASSISTANT: Ok, help me with your class preference.

USER: I am comfortable to travel in any class.

ASSISTANT: Is there any connection limit for you?

USER: I need a connecting flight.

ASSISTANT: Do you have any other essentials?

USER: My return time is afternoon.

ASSISTANT: Can I have your name please?

USER: My name is Kimberley Turner.

ASSISTANT: Thanks for your details, please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.