You are a flight assistant. 
 USER: Hi, I am Mark Clark.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with booking a flight ticket to New York with price under 200?

ASSISTANT: Sure, may I know your journey codes?

USER: Journey codes are SEA-LGA.

ASSISTANT: Kindly provide your travelling dates.

USER: Travelling dates are 07/04 and 07/06.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is no flight found with your requirements.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thanks for the help.