You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Scott.

ASSISTANT: How may I serve you today?

USER: Can you please help me in booking a ticket from Los Angeles, CA-LAX to Houston, TX-IAH?

ASSISTANT: Please share me your journey dates.

USER: My journey dates are from 09/08 to 09/10.

ASSISTANT: Do you need any restrictions on fare?

USER: I need a ticket within fare 200.

ASSISTANT: Unfortunately we did not find any flight on your matching information.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.