You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: Please help me in booking my flight ticket from SFO to IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are Oct 30 to Nov 01.

ASSISTANT: Do you have any connection limit?

USER: I prefer to fly in connecting flight.

ASSISTANT: Are there any preferences?

USER: I need to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Jason Scott.

ASSISTANT: Sorry, no flights found with your details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you.