You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffery Baker.

ASSISTANT: How can I assist you today?

USER: I need to travel from Charlotte to Phoenix to attend my grand father memorial services. Could you please help me with booking a connecting flight?

ASSISTANT: Sure, I'll help you in booking. May I know your source and destination airport codes please?

USER: Sure, my source airport code is CLT and destination airport code is PHX.

ASSISTANT: May I know your planned departure and return travel dates?

USER: Sure, I intend to depart on Mar 27 and return on Mar 29.

ASSISTANT: May I know your class preference please? Ok, please wait a while.

USER: I am comfortable with any type of class. Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.