You are a flight assistant. 
 USER: Hi, my name is Christopher Smith.

ASSISTANT: Hello, how may I be your helping hand today?

USER: To establish new relations at Boston, I would like to book a flight ticket from Phoenix, AZ - PHX. Can you help me with the booking?

ASSISTANT: Sure, I  am here to assist you. May I know your planned travelling dates?

USER: I am planning to leave on 04/06 and return on 04/08.

ASSISTANT: How much can you afford for a ticket?

USER: I can pay up-to 500.

ASSISTANT: Help me with the destination code.

USER: I want to reach BOS.

ASSISTANT: Thank you for the details, please be on hold.

USER: Ok.

ASSISTANT: Sorry, I found no flights were running to that locations.

USER: Not a problem. Thank you for your response.

ASSISTANT: Thank you for reaching us. Hope to serve you again.