You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Frank Taylor, can you help me to book a flight from PHX to SEA?

ASSISTANT: Sure, I am here to help you in booking. May I know your travel dates to book a flight?

USER: My travelling dates are 04/24 and 04/26.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry for the inconvenience Taylor, there are no flights in your route as per your travelling details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for consulting us.