You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jacob Lewis.

ASSISTANT: How may I help you?

USER:  I would like to travel in a less expensive flight. So search for a flight with in price 200.

ASSISTANT: May I know your travel dates?

USER: 11/24 and 11/26 are my travelling dates.

ASSISTANT: Please help me with your airport codes.

USER: IAH and LAX are my airport codes.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No issue. Thank you.

ASSISTANT: Most welcome.