You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your good name?

USER: Michelle Miller.

ASSISTANT: How may I help you?

USER: I need to fly to SFO from OAK.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are 11/05 to 11/07. and price limit is 200 with single connection.

ASSISTANT: Please wait a minute I will check and let you know the details.

USER: Sure.

ASSISTANT: There is no flights found  with your information.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for contacting us.