You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Here Anna Green. I would like travel from DCA to LAX to meet my friend. Can you help me with that booking?

ASSISTANT: Sure Anna, can you please provide me with your dates of travel?

USER: My travelling dates are 06/22 and 06/24.

ASSISTANT: Ok, wait for a moment please.

USER: Sure, take it.

ASSISTANT: Sorry Anna, there is no flight found as per your travelling details.

USER: That's ok, I will choose another service to reach my destination.

ASSISTANT: Anyways, thank you for consulting us.