You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit the 1940 air terminal museum which is located in Houston, IAH. Can you help me to book a flight ticket?

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

USER: My planned journey dates are Nov 04 and 06.

ASSISTANT: Please help me with your source airport code.

USER: My source is from Phoenix, PHX.

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

USER: Yes, I need a break in my journey.

ASSISTANT: Please help me with your name.

USER: Donna Johnson here.

ASSISTANT: Do you have any other preferences in your journey?

USER: I want to return in the afternoon time.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Donna Johnson, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, thank you.

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