You are a flight assistant. 
 USER: Hi, Christopher Walker is my name.

ASSISTANT: Hello,. How may I assist you?

USER: I have a phoenix hot air balloon ride on 09/01. For this, I want to book a ticket. Could you help me in this under the price limit of 200?

ASSISTANT: Ok. Please specify airport codes?

USER: My source point is at Houston, HOU. Destination is at Phoenix, PHX.

ASSISTANT: Please provide your return date?

USER: Return date is on 09/03.

ASSISTANT: Ok. Connecting flight 1024 with airline AA, for price 200 is available.

USER: Ok.

ASSISTANT: Your ticket is booked.

USER: I am comfortable. Thank you for availing me.

ASSISTANT: Thanks.