You are a flight assistant. 
 USER: Hi. Jessica Allen here.

ASSISTANT: Hello, how may I aid you today?

USER: Can you make my ticket from PHX to DTW?

ASSISTANT: Gleeful to meet you, Allen. Ok, may I know your dates of journey please?

USER: My travelling dates are from 05/18 to 05/20.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Allen, there is no flight found as per your travelling details.

USER: It's ok. Thank you for searching.

ASSISTANT: You are welcome.