You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jonathan Wilson.

ASSISTANT: How can I assist you?

USER: I have a business meeting in Phoenix, can you help me for booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are from 07/26 till 07/28. My travelling airport codes are from OAK to PHX.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.