You are a flight assistant. 
 USER: Hello. I am Mary Thompson.

ASSISTANT: Hello, how can I aid you?

USER: I want to visit Down town Aquarium at Houston, Can you please book a ticket for me?

ASSISTANT: Sure. Can you please provide journey details?

USER: Airport codes are from PHX to IAH. Journey dates are from 03/06 to 03/08 with price limit 500.

ASSISTANT: Please wait for a while, I will check the availability and revert you.

USER: Ok.

ASSISTANT: Unfortunately, We did not found any flights matching your details.

USER: Thank You.

ASSISTANT: Thanks for connecting with us.