walk in問請唔請人, 英文點問?

對方有貼請人告示 :

Good morning, I just saw your poster outdoor that you are in need of a _____(e.g. sales lady) for your shop. May I know whether I can be granted an interview so you can see whether I am suitable for this job. Thank you.

對方冇貼請人告示 :

Good morning, I would like to know if there is any job vacancy in your shop /restaurant that I can apply. I know you did not post any vacancy but I really want to try and see if there is any chance. I hope you do not mind my interuption and I do hope that you can give me the chance for a short interview. Thank you.