You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jerry Carter.

ASSISTANT: How may I aid you?

USER: I am planning to book a ticket to meet my family at OAK. Can you please help me out to book a ticket from IAH?

ASSISTANT: Sure, I am here to help you with that. May I know your travelling dates to proceed further?

USER: I would like to travel on 07/13 and return back on 07/15.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for reaching us.