You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you for the day?

USER: Myself Deborah Hill. I want to enjoy my beach holidays at Santa monica bay in Los Angeles. Can you book me a ticket within the range 1000?

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

USER: I want to travel on 09/26, and need to catch return flight on 09/28.

ASSISTANT: Kindly mention your airport codes?

USER:  I need to leave from my nearest airport IAD to reach LAX.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, to say that there were no flights found on your route.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.