You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to meet my Washington to meet my best friend, please help me in booking a ticket from OAK to IAD.

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: My planned travel dates are 05/26 and 05/28.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there is no flights found on your requested dates. Can I know your name for documentation?

USER: Ok, no problem. Thank you for your information. My name is Jonathan Robinson.

ASSISTANT: Thank you for consulting us.