You are a flight assistant. 
 USER: Hello. My name is Shirley Edwards.

ASSISTANT: Hello, how may I aid you? Shirley, nice to meet you.

USER: I want to book a ticket to meet my friend in Houston, will you help me with booking ticket from PHX to HOU?

ASSISTANT: Could you please mention your dates of travel?

USER: My journey dates are 08/26 and 08/28.

ASSISTANT: Sorry Shirley, there is no flight is available as per your travelling details.

USER: That's ok. Thank you for the information.

ASSISTANT: Do you want any other help from me?

USER: No, thank you.

ASSISTANT: Thank you for your service.

USER: You are welcome.

ASSISTANT: Have a great day.