You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to attend to my friend marriage at San Francisco SFO, can you help me with booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I will fly on 06/05 and 06/07.

ASSISTANT: From where do you want to board?

USER: My boarding point is Washington DCA.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a way station in between my journey.

ASSISTANT: Thanks for providing your details, please wait a moment.

USER: Sure.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: No issues.

ASSISTANT: May I know your name?

USER: I am Jeffrey Williams.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance.