You are a flight assistant. 
 USER: Hello. I am Linda Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I need your help in booking a plane ticket on 01/16 to go for wedding shopping with my friend?

ASSISTANT: Sure, can I have your airfare?

USER: It can be up to 1000.

ASSISTANT: Help me with the source and destination codes?

USER: My source code is Los Angeles, LAX and my destination code is Washington, IAD.

ASSISTANT: When would you like to return from Washington?

USER: My return will be on 01/18.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thank you for your time, we found that no flights were running to that locations.

USER: Ok, no issue. Thank you for the kind information.

ASSISTANT: Thank you for reaching us.