You are a flight assistant. 
 USER: Hello, Eric Robinson here.

ASSISTANT: Hello, what can I do for you?

USER: Can you please help me in booking the ticket from HOU to OAK? As I'm planning to visit Oakland hills.

ASSISTANT: Eric, how long is your vacation?

USER: I have planned my trip my trip for two days, I'll depart from my location on 11/06 and I want to fly-back on 11/08.

ASSISTANT: Please wait for a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Eric sorry for inconvience, no flights are availuable with your criteria.

USER: Oh! That's ok, I'll reach my destination by some other mode of transport. Thank you anyways.

ASSISTANT: Thank you Eric for utilizing our agency.