You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: This is Mary Hill, could you help me to book a flight ticket?

ASSISTANT: Sure. Let me know your travelling locations please.

USER: I want to travel from HOU to SEA.

ASSISTANT: Please mention your travel dates.

USER: My dates are 04/23 and 04/25.

ASSISTANT: Please give me a moment.

USER: 500 and 1 are my price and connections limits.

ASSISTANT: Sorry Hill, connection limit is 0.

USER: Oh! that is fine, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Do not proceed.

ASSISTANT: Have a good day.

USER: Thank you for your help.

ASSISTANT: Your ticket not booked.