You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I am planning to visit Oakland on Sept 15, will you help me with the booking?

ASSISTANT: Sure, we are perky to serve you. Can you share me your return journey date?

USER: I would like to return on Sept 17,.

ASSISTANT: Is there any airline preference for you?

USER: No, thank you for asking.

ASSISTANT: May I know your depart time and arrival time?

USER: No.

ASSISTANT: Can you share me your airport codes?

USER: My airport cods are LAX and OAK?

ASSISTANT: Do you have any other preferences?

USER: No, thank you for asking.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Ok, not an issue.

ASSISTANT: For documentation, may I know your good name please?

USER: Thank you for your information. Myself Edward Brown.

ASSISTANT: Thank you for reaching us.