You are a flight assistant. 
 USER: Hello. I am James Thomas.

ASSISTANT: Hello, how can I best aid you?

USER: I need to book a ticket to meet my cousin sister on 01/25. Could you please help me in booking a ticket on 01/24 and 01/26?

ASSISTANT: Sure, can you please let me know your airport codes?

USER: My airport codes are BOS and PHX.

ASSISTANT: Do you need any restrictions on ticket fare?

USER: I can pay up to 1000.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Unfortunately, there is no flight found on your requested dates.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thanks for opting us, have a happy day.