You are a flight assistant. 
 USER: Hello. Myself Gary Perez.

ASSISTANT: Hello, how may I oblige you today?

USER: I need to meet my friend in Phoenix, can you please book flight ticket from OAK and PHX?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are 07/13 and 07/15 and my budget is 500.

ASSISTANT:  Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: That's not an issue, I will choose any other source to travel my place.

ASSISTANT: Thank you for your positive response.