You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: I am Sarah Hill. I want to book a ticket from PHX to LAS, can you help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are May 03 and May 05.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: There is no flight available on your mentioned dates.

USER: No problem, thanks for checking.

ASSISTANT: Thanks for reaching us.