You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I have to meet my project manager, can you please help me to book the flight ticket from HOU to IAH?

ASSISTANT: Ok, please mention your trip dates.

USER: I want to depart on 07/13 and return back on 07/15.

ASSISTANT: May I know your name?

USER: My name is William Jones.

ASSISTANT: Ok, thanks for your details, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time William Jones, there is no flight for you to book the ticket.

USER: So sad to hear that, anyway thank you for checking.

ASSISTANT: Ok, thanks for contacting us.