You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Jeffrey Campbell.

ASSISTANT: How may I aid you?

USER: I love hiking and would like to hike Camelback mountain at Phoenix. Can you help me in booking a ticket from DCA to PHX?

ASSISTANT: Sure, can I have your journey dates please?

USER: My planned journey dates are 05/03 and 05/05.

ASSISTANT: Please wait a minute. Campbell, no flights has been found on your journey dates.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for approaching us.