You are a flight assistant. 
 USER: Hi. I am Timothy Rodriguez.

ASSISTANT: Hello, do you need any assistance from us?

USER: Can you help me in booking from PHL to PHX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 05/25 to 05/27.

ASSISTANT: Timothy, all flight tickets are sold out in your planned month.

USER: No issue, thank you for your time.

ASSISTANT: Thank you.