You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, what can I do for you?

USER: I am having a family get together on June 12th, want to book a flight to Los Angeles, CA-LAX.

ASSISTANT: Sure, may I know your name please?

USER: I am Ruth Hill.

ASSISTANT: OK Ruth, now can you please tell me when and from which place do you want to start your travel?

USER: I want to start from Washington DC-IAD on June 10th.

ASSISTANT: OK, give me a moment to enquire and I will revert to you.

USER: Sure,.

ASSISTANT: Thanks for waiting but, I am sorry to notify you that no flight is available along your requirement.

USER: OK, Thanks for your information.

ASSISTANT: Thanks for reaching out to us. Have a nice day.