You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I guide you?

USER: I am Gregory Martinez. I would like to visit Apostolic Christian Church of America at Phoenix, PHX. Can you please help me in booking within the fare of 1000?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: May I know your journey dates?

USER: My journey start on 05/09 and 05/11.

ASSISTANT: Ok, from which airport are you going to start?

USER: My boarding point is Oakland, OAK.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, we don't have flight on your dates.

USER: Ok, no problem. Thank you  for your information.

ASSISTANT: Thank you for reaching us.