You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am James Rodriguez.

ASSISTANT: What type of service your are excepting from us?

USER: Can you help me in booking from PHX to OAK?

ASSISTANT: Sure, I am here to help you with that. Can I have itinerary dates?

USER: My trip dates are 09/03 to 09/05.

ASSISTANT: Sorry for the inconvenience, there are no flight's available based on your travelling dates.

USER: No issue, thank you.

ASSISTANT: Thank you for approaching us.