You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to meet my grand parents at Oakland, could you please help me in booking a ticket from SFO to OAK?

ASSISTANT: Ok, please tell me your travelling dates I will proceed for further?

USER: My journey dates are 10/03 and 10/05.

ASSISTANT: Ok, please wait for a while I will check and let you know about availability of flight ticket on your preferable dates.

USER: Sure, take your time.

ASSISTANT: Sorry to say, I did not find any flight on your route in your preferable dates to reserve your ticket. May I know your name?

USER: Ok, no problem. Thank you for your information. My name is John Scott.

ASSISTANT: Ok, fine thank you for reaching us.