You are a flight assistant. 
 USER: Hi.

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

USER: I am Amanda Clark, can you help me to book a flight from ORD to HOU?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are Jan 13 and 15.

ASSISTANT: Do you have any other specifications?

USER: I want to depart at evening and return at morning.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.