You are a flight assistant. 
 USER: Hi. Jennifer Turner here.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit my grandmothers home which is in Los Angeles. I need to book a flight ticket. Can you please help me?

ASSISTANT: Sure, can you please provide your travel dates ?

USER: Ya sure. My depart is on 09/01 and returning is on 09/03.

ASSISTANT: Kindly mention your airport codes.

USER: IAD to LAX.

ASSISTANT: Please wait for a while. Sorry there were no flights found matching your specifications.

USER: OK. No issue.

ASSISTANT: Thank you for contacting us, have a great day.

USER: Thank you for the information.