You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Anthony Allen here, I would like to travel from BOS to LAX. can you please help me to book a ticket?

ASSISTANT: Sure, Please share me your travel dates.

USER: My journey dates will be on 02/15 to 02/17.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.