You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephen Hall here.

ASSISTANT: How may I aid you today?

USER: Can you help me to make a flight reservation from IAH to IAH?

ASSISTANT: Sure, I will help you with that.

USER: My trip dates are 03/19 and 03/21.

ASSISTANT: Can you please share your preferable journey dates? Ok.

USER: Make sure that connection must be 0.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's fine, thanks for your help and information.

ASSISTANT: Thank you for reaching us, have a great day.