You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Brandon Parker. I planned to attend for a wedding in ORD, can you please help me to book a flight ticket from IAH?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I prefer to travel on 11/29 and 12/01.

ASSISTANT: Is there any specification in your price limit?

USER: Please make sure that the price should be within 200.

ASSISTANT: Sorry Parker, there are no flights available under your price limit.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.