You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you for the day?

USER: I am Virginia Adams, I have to meet my grandfather in Houston. Can you please help me to book my flight ticket from EWR to HOU?

ASSISTANT: Ok, may I know your travelling dates please?

USER: I want to depart on 01/16 and return back from HOU on 01/18.

ASSISTANT: Please wait for a moment till I check any availability for you.

USER: Sure.

ASSISTANT: Virginia Adams, sorry to inform you but there are no flights available for you.

USER: Not an issue, I will find an other way to travel. Anyway thank you for the information.

ASSISTANT: Thank you for choosing our agency.