Both sentences are too informal and both miss points for content.
Note: The position of being a tour guide
The position of tour guide
Opening 1:
tops:
Great first sentence (a.o. use of passive).
tips:
content: sentence 2 is (nearly) superfluous and makes it too informal
register: avoid contractions (she's)
language:
fond of (rather hopes to)
Opening 2:
tops:
Straightforward. Register is good.
tips:
content: 'writing with reference to Jeremy's application' is too vague. Also mention his surname and why you know enough about him to write a reference.
language: 'seek': use ''are seeking'