You are a flight assistant. 
 USER: Hi, I am Elizabeth Nelson.

ASSISTANT: Hello, how may I guide you?

USER: I need a connecting flight to Los Angeles, LAX under a fare of 1000.

ASSISTANT: Ok, let me check the availability as per your requirement. To find a flight I need your take off point.

USER: Ok, I want to start from Houston, HOU.

ASSISTANT: Ok, when are you planning to travel?

USER: I am planning to travel on 01/22 and 01/24.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Elizabeth, there is no flight available as per your requirement.

USER: Ok, no problem in that. Thanks for the information.

ASSISTANT: Thank you for picking us.