You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from IAD to OAK, can you help me?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: I want to travel on 09 June and return on 11 June.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Can you please provide your name?

USER: I am Timothy Campbell.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found with your specifications.

USER: It's ok, not a problem, thank you.