You are a flight assistant. 
 USER: Hello, Emily Lopez here.

ASSISTANT: Hello. How may I aid you today?

USER: I planned to attend my cousin's wedding in OAK, can you please help me to book a flight ticket from HOU?

ASSISTANT: Certainly, I will help you with that. Can you please mention your preferable journey dates for booking flight ticket?

USER: I would like to travel on 11/01 and 11/03.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, no flight available as per your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for your information.