You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to travel Houston next week to meet my friends there, can you please book a flight ticket from PHL airport?

ASSISTANT: Sure, I will help you out.

USER: Thanks.

ASSISTANT: May I know your name please?

USER: Sure, my name is Jack Walker.

ASSISTANT: May I know your destination airport code please?

USER: My destination airport is IAH.

ASSISTANT: Can I know your travelling dates please?

USER: I want to take off on 02/15 and also confirm my return ticket too on 02/17.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found.

USER: Oh! It's ok no problem, I will go with another airline service.

ASSISTANT: Thank you for reaching us.