You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please make a reservation from SFO to PHX to attend a seminar in Phoenix?

ASSISTANT: Sure, may I know the planned travel dates?

USER: My journey dates are on Nov 23rd an arrival on Nov 25th.

ASSISTANT: Please provide me the specifications.

USER: I don't have any other specifications.

ASSISTANT: May I know the name?

USER: My name is Samuel Mitchell.

ASSISTANT: Sorry, there are no flights are available for your desired dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.