You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Brandon Williams here.

ASSISTANT: Williams, how can I help you?

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

ASSISTANT: Can I know your journey dates please?

USER: My travelling dates are from 03/18 to 03/20.

ASSISTANT: Please give me a moment. Sorry Williams, no flight is available.

USER: No issuse. Thank you.

ASSISTANT: My pleasure, have a nice day.