You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Edward Parker, want to travel from EWR to OAK. Please help me in booking my ticket.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable dates?

USER: Sure, my travelling dates are from 08/27 to 08/29.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Oh! It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Thank you.