You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Jeffery Clark. Please book me a ticket from PHX to PHL to meet my family.

ASSISTANT: Sure, may I know your travelling dates?

USER: I have planned to travel on Jan 19th and return on Jan 21st.

ASSISTANT:  Is there any particular timings in your departure and arrival?

USER: Yes, I have planned to return at morning time.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.