You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to book a flight ticket from IAH to JFK, Can you please help me for booking?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: I would like to travel on 06/12 to return on 06/14.

ASSISTANT: Please help me with your name.

USER: Lisa Miller here.

ASSISTANT: Do you need a break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: I would be return on morning.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Lisa Miller, I am really sorry to inform you that there are flights available for your journey.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.