You are a flight assistant. 
 USER: Hi. I am Angela Parker.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to attend a house warming ceremony on 11/04. Can you help me?

ASSISTANT: Sure, please share me your travelling dates?

USER: 11/04 and 11/06 are my preferable travelling dates.

ASSISTANT: Can I know your airport codes?

USER: WA-SEA and AZ-PHX are my airport codes.

ASSISTANT: Please wait for few minutes.

USER: Ok.

ASSISTANT: There is no flight with your requirement.

USER: No issue. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.