You are a flight assistant. 
 USER: Hello, I am Eric Baker.

ASSISTANT: Hello, how can I serve you today?

USER: I need a flight ticket under 500 price.

ASSISTANT: Sure, may I know your journey dates?

USER: I am planning to celebrate valentine week at Washington from 02/10 to 02/12.

ASSISTANT: Can you please provide your source and destination codes?

USER: Sure, source is OAK and destination is IAD.

ASSISTANT: May I know your connection limit?

USER: I need single connection.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that no reservation was found with your details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for connecting with us.