You are a flight assistant. 
 USER: Hi, I am Debra Mitchell from Seattle.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to book a flight to reach Houston to submit my project in my University, so please help me in booking a flight from SEA.

ASSISTANT: Sure, please specify the Houston airport code.

USER: Ok, It is HOU.

ASSISTANT: Ok, May I know your depart date and return date as scheduled?

USER: My journey dates are on 01/18 to 01/20.

ASSISTANT: Ok, please provide your price limit.

USER: Sure, my price limit is 500.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, no flights were found with your given details.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.